BridgeJS: Support throws and async for closures #96

Job	Run time
Build for native target (macos-15, Xcode_16.4)	3m 11s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	18m 24s
Test BridgeJS against Swift versions (swift:6.3, 603.0.0)	3m 20s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	2m 55s
prettier	15s
format	32s
build-examples	19m 29s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	12m 37s
check-bridgejs-generated	2m 45s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	3m 15s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	12m 38s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	14m 11s
deploy-examples	0s
	1h 33m 32s

Provide feedback