Conformed the AmiiboServiceError error in the library target to the LocalizedError protocol.

Sources/AmiiboService/Public/Errors/AmiiboServiceError.swift

@@ -1,17 +1,19 @@
 // ===----------------------------------------------------------------------===
-// 
+//
 // This source file is part of the Amiibo Service open source project
-// 
+//
 // Copyright (c) 2026 Röck+Cöde VoF. and the Amiibo Service project authors
 // Licensed under Apache license v2.0
-// 
+//
 // See LICENSE for license information
 // See CONTRIBUTORS for the list of Amiibo Service project authors
 //
 // SPDX-License-Identifier: Apache-2.0
-// 
+//
 // ===----------------------------------------------------------------------===
 
+import Foundation
+
 /// A representation of all the possible errors that the ``AmiiboService`` service could throw.
 public enum AmiiboServiceError: Error {
     /// The request was malformed or contained invalid filter parameters.
@@ -33,3 +35,23 @@ public enum AmiiboServiceError: Error {
 // MARK: - Equatable
 
 extension AmiiboServiceError: Equatable {}
+
+// MARK: - LocalizedError
+
+extension AmiiboServiceError: LocalizedError {
+
+    // MARK: Properties
+
+    public var errorDescription: String? {
+        switch self {
+        case .badRequest: "The request was malformed or contained invalid filter parameters."
+        case .cancelled: "The request was cancelled before a response was received."
+        case .decoding: "The response body could not be decoded into the expected model."
+        case .notAvailable: "The backend service is currently unreachable due to a network or server issue."
+        case .notFound: "No results were found matching the given filter criteria."
+        case .undocumented(let statusCode): "The server returned an undocumented HTTP status code: \(statusCode)."
+        case .unknown: "An unexpected error occurred."
+        }
+    }
+
+}