Moved the Amiibo API implementation to its own package (#2)

This PR contains the work done to migrate the *almost* completed**Amiibo API** implementation done in another project to its own stand-alone package.

Reviewed-on: rock-n-code/amiibo-api#2
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Sources/Public/Errors/AmiiboServiceError.swift

@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===
+//
+// This source file is part of the AmiiboAPI open source project
+//
+// Copyright (c) 2024 Röck+Cöde VoF. and the AmiiboAPI project authors
+// Licensed under the EUPL 1.2 or later.
+//
+// See LICENSE for license information
+// See CONTRIBUTORS for the list of AmiiboAPI project authors
+//
+//===----------------------------------------------------------------------===
+
+public enum AmiiboServiceError: Error {
+    case badRequest
+    case decoding
+    case notAvailable
+    case notFound
+    case undocumented(_ statusCode: Int)
+    case unknown
+}
+
+// MARK: - Equatable
+
+extension AmiiboServiceError: Equatable {}