Create Google Cast universal packaging script

.gitignore

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+.DS_Store

LICENSE

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+https://developers.google.com/terms/

Package.swift

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+// swift-tools-version:5.3
+
+import PackageDescription
+
+struct PackageMetadata {
+    static let version: String = "4.8.3"
+    static let checksum: String = "bc2c3c2434ef2895a0388ac3f16932242d3d3ac11805f810dbe7d7bce3bb27f6"
+}
+
+let package = Package(
+    name: "GoogleCast",
+    platforms: [
+        .iOS(.v14),
+    ],
+    products: [
+        .library(
+            name: "GoogleCast",
+            targets: ["GoogleCast"]
+        )
+    ],
+    targets: [
+        .binaryTarget(
+            name: "GoogleCast",
+            url: "https://github.com/SRGSSR/google-cast-sdk/releases/download/\(PackageMetadata.version)/GoogleCast.xcframework.zip",
+            checksum: PackageMetadata.checksum
+        )
+    ]
+)

README.md

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+# Google Cast SDK
+
+Until Google provides SPM support for its Google Cast SDK this repository delivers official XCFrameworks as Swift packages for easy integration into projects.
+
+## Integration
+
+Use [Swift Package Manager](https://swift.org/package-manager) directly [within Xcode](https://developer.apple.com/documentation/xcode/adding_package_dependencies_to_your_app). You can also declare the library as a dependency of another one directly in the associated `Package.swift` manifest.
+
+### Make the XCFramework available
+
+To make the generated framework available:
+
+1. Download the _Dynamic_ framework from the [Google Cast SDK manual setup](https://developers.google.com/cast/docs/ios_sender#manual_setup).
+2. Rename the corresponding zip as `GoogleCast.xcframework.zip`.
+3. Calculate the zip checksum using `swift package compute-checksum /path/to/GoogleCast.xcframework.zip`
+3. Update the `Package.swift` in this repository with the framework version number and the checksum that you obtained. Also update the deployment target according to the official SDK documentation.
+4. Commit the changes on `main` and create a corresponding tag.
+5. Push the commit and the tag to GitHub.
+6. Attach the binary to the tag on GitHub.
+
+Do not commit the binaries in the repository, as this would slow down checkouts made by SPM as the repostory grows.