tasks: update swift bindings package

[lvaccaro]

Hi, Some minor updated on building bindings for swift:

1. Update uniffi build command
2. Prepend umbrella label in `modulemap file: fix associate the header with the explicit unique module name
3. Replace lipo-ios-sim with aarch64-apple-ios-sim if no more support for legacy ios simulator, commented

   greenlight/build/.tasks.yml

   Line 55 in 3dd84ae

   # - ios-apple-x86_64

Alternatively, in order to support the legacy ios simulator platform, xcode requires to merge both ios platforms with lipo and then pass the result in xcodebuild -create-xcframework as defined in

greenlight/build/.tasks.yml

Line 43 in 3dd84ae

- xcodebuild -create-xcframework -library target/lipo-ios-sim/release/libglsdk.a -headers target/swift/include -library target/aarch64-apple-ios/release/libglsdk.a -headers target/swift/include -output target/glsdkFFI.xcframework

To build the legacy ios simulator platform and merged ios sim library together, see the commented code:

  ios-sim:
    deps:
      - ios-sim-apple-aarch64
#      - ios-apple-x86_64
#   cmds:
#      - mkdir -p target/lipo-ios-sim/release
#      - lipo -create target/aarch64-apple-ios-sim/release/libglsdk.a target/x86_64-apple-ios/release/libglsdk.a -output target/lipo-ios-sim/release/libglsdk.a

[cdecker]

Thank you 🙏
Can you tell I don't know much about the iOS and Swift ecosystems? 😅