Implemented the Template enumeration in the library target.

Library/Sources/Internal/Enumerations/Template.swift

@@ -0,0 +1,37 @@
+enum Template: String {
+    case app = "App"
+    case appTests = "AppTests"
+    case package = "Package"
+}
+
+// MARK: - Properties
+
+extension Template {
+    
+    // MARK: Computed
+    
+    var fileName: String {
+        switch self {
+        case .app: "App.swift"
+        case .appTests: "AppTests.swift"
+        case .package: "Package.swift"
+        }
+    }
+    
+    var filePath: String {
+        folder.path + fileName
+    }
+    
+    var folder: Folder {
+        switch self {
+        case .app: .app
+        case .appTests: .testCasesPublic
+        default: .root
+        }
+    }
+    
+}
+
+// MARK: - CaseIterable
+
+extension Template: CaseIterable {}