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>

Tests/amiibo_apiTests.swift

@@ -1,7 +0,0 @@
-import Testing
-
-@testable import AmiiboAPI
-
-@Test func example() async throws {
-    // Write your test here and use APIs like `#expect(...)` to check expected conditions.
-}