[Enhancement] Lossy codable list property wrapper (#19)

This PR contains the work done to implement the `LossyCodableList` struct and property wrapper, which is used in lossy decoding/encoding processes.

Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: #19

Tests/Core/Helpers/Models/TestCodable.swift

@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftLibs open source project
+//
+// Copyright (c) 2023 Röck+Cöde VoF. and the SwiftLibs project authors
+// Licensed under the EUPL 1.2 or later.
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftLibs project authors
+//
+//===----------------------------------------------------------------------===//
+
+struct TestCodable: Codable, Equatable {
+    let key: String
+    let value: Int
+}
+
+// MARK: - Initialisers
+
+extension TestCodable {
+    init?(
+        key: String? = nil,
+        value: Int? = nil
+    ) {
+        guard let key, let value else { return nil }
+        
+        self.key = key
+        self.value = value
+    }
+}

Tests/Core/Helpers/Models/TestCodableList.swift

@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftLibs open source project
+//
+// Copyright (c) 2023 Röck+Cöde VoF. and the SwiftLibs project authors
+// Licensed under the EUPL 1.2 or later.
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftLibs project authors
+//
+//===----------------------------------------------------------------------===//
+
+import Core
+
+struct TestCodableList: Codable {
+    @LossyCodableList var items: [TestCodable]
+}