OpenAPI client (#2)

This PR contains the work done to add the `Open API` dependencies into the library, plus to configure a dynamically generated client based on the latest [App Store Connect OAS document](https://developer.apple.com/sample-code/app-store-connect/app-store-connect-openapi-specification.zip), downloaded from the [App Store Connect documentation](https://developer.apple.com/documentation/appstoreconnectapi/) website.

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

Package.swift

@@ -30,12 +30,22 @@ let package = Package(
         ),
     ],
     dependencies: [
+        .package(url: "https://github.com/apple/swift-openapi-generator.git", from: "1.3.0"),
+        .package(url: "https://github.com/apple/swift-openapi-runtime", from: "1.5.0"),
+        .package(url: "https://github.com/apple/swift-openapi-urlsession", from: "1.0.2"),
         .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.1.0")
     ],
     targets: [
         .target(
             name: AppStoreConnectService.target,
-            path: "Sources/ASConnectService"
+            dependencies: [
+                .product(name: "OpenAPIRuntime", package: "swift-openapi-runtime"),
+                .product(name: "OpenAPIURLSession", package: "swift-openapi-urlsession")
+            ],
+            path: "Sources/ASConnectService",
+            plugins: [
+                .plugin(name: "OpenAPIGenerator", package: "swift-openapi-generator")
+            ]
         ),
         .testTarget(
             name: AppStoreConnectService.test,