[Library] Foundation library setup (#3)

This PR contains the work done to define a `Libraries` package that includes its `Foundation` library in it, and integrated the former to the `Feed` framework and `App` targets in the project as well.

Reviewed-on: rock-n-code/app-reviews#3
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Libraries/.swiftpm/xcode/xcshareddata/xcschemes/ReviewsFoundationTest.xcscheme

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1530"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ReviewsFoundationTest"
+               BuildableName = "ReviewsFoundationTest"
+               BlueprintName = "ReviewsFoundationTest"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Libraries/.swiftpm/xcode/xcshareddata/xcschemes/ReviewsKit.xcscheme

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1530"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ReviewsKit"
+               BuildableName = "ReviewsKit"
+               BlueprintName = "ReviewsKit"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <TestPlans>
+         <TestPlanReference
+            reference = "container:../Libraries.xctestplan"
+            default = "YES">
+         </TestPlanReference>
+      </TestPlans>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "ReviewsKit"
+            BuildableName = "ReviewsKit"
+            BlueprintName = "ReviewsKit"
+            ReferencedContainer = "container:">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Libraries/Foundation/Kit/Sources/Extensions/String+Constants.swift

@@ -0,0 +1,18 @@
+//
+//  String+Constants.swift
+//  ReviewsFoundation
+//
+//  Created by Javier Cicchelli on 16/03/2024.
+//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
+//
+
+import Foundation
+
+public extension String {
+    
+    // MARK: Constants
+    
+    /// A representation of an empty string.
+    static let empty: String = ""
+    
+}

Libraries/Foundation/Test/Tests/Extensions/String+ConstantsTests.swift

@@ -0,0 +1,27 @@
+//
+//  String+ConstantsTests.swift
+//  ReviewsFoundationTest
+//
+//  Created by Javier Cicchelli on 16/03/2024.
+//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
+//
+
+import ReviewsFoundation
+import XCTest
+
+final class String_ConstantsTests: XCTestCase {
+    
+    // MARK: Properties
+    private var sut: String!
+    
+    // MARK: Constants tests
+    func testEmpty() throws {
+        // GIVEN
+        sut = .empty
+
+        // WHEN
+        // THEN
+        XCTAssertTrue(sut.isEmpty)
+    }
+    
+}

Libraries/Package.swift

@@ -0,0 +1,57 @@
+// swift-tools-version: 5.10
+
+import PackageDescription
+
+let package = Package(
+    name: .Package.name,
+    platforms: [
+        .iOS(.v14)
+    ],
+    products: [
+        .library(
+            name: .Product.name.kit,
+            targets: [
+                .Target.foundation
+            ]
+        ),
+    ],
+    targets: [
+        .target(
+            name: .Target.foundation,
+            path: "Foundation/Kit"
+        ),
+        .testTarget(
+            name: .Target.foundation.test,
+            dependencies: [
+                .byName(name: .Target.foundation)
+            ],
+            path: "Foundation/Test"
+        ),
+    ]
+)
+
+// MARK: - String+Constants
+private extension String {
+    enum Package {
+        static let name = "reviews-kit"
+    }
+    
+    enum Product {
+        static let name = "Reviews"
+    }
+    
+    enum Target {
+        static let foundation = "\(String.Product.name)Foundation"
+    }
+}
+
+// MARK: - String+Computed
+private extension String {
+    var kit: String {
+        "\(self)Kit"
+    }
+    
+    var test: String {
+        "\(self)Test"
+    }
+}