BridgeJS: Add `JSTypedClosure` API #2177

Job	Run time
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 41s
Test BridgeJS against Swift versions (swift:6.1.2, 601.0.0)	3m 3s
build-examples	25m 38s
format	34s
Test BridgeJS against Swift versions (swift:6.2, 602.0.0)	2m 55s
Build for native target (macos-15, Xcode_16.4)	2m 24s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	17m 40s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	13m 12s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	13m 19s
check-bridgejs-generated	2m 49s
deploy-examples	-1s
	1h 35m 14s

Provide feedback