BridgeJS: Add internal debug tool for inspecting intermediate stages #1951

Job	Run time
format	33s
check-bridgejs-generated	2m 39s
Build and Test (ubuntu-24.04, https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT...	12m 52s
build-examples	42m 45s
Build for native target (macos-15, Xcode_16.4)	3m 35s
Build and Test (ubuntu-24.04, https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DE...	13m 6s
Build and Test (ubuntu-22.04, https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT...	17m 35s
Build and Test (ubuntu-22.04, https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-R...	13m 40s
deploy-examples	-1s
	1h 46m 44s

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