feat: Add support for eventstream input & initial request to RPC-based protocols #2957

Job	Run time
apple (macos-13-xlarge, Xcode_14.1, platform=iOS Simulator,OS=16.1,name=iPhone 14)	6m 45s
apple (macos-13-xlarge, Xcode_14.1, platform=tvOS Simulator,OS=16.1,name=Apple TV 4K (3rd generat...	4m 52s
apple (macos-13-xlarge, Xcode_14.1, platform=OS X)	4m 22s
linux (focal, 5.7)	6m 22s
apple (macos-14-xlarge, Xcode_15.2, platform=iOS Simulator,OS=17.2,name=iPhone 15)	6m 38s
linux (focal, 5.9)	6m 40s
apple (macos-14-xlarge, Xcode_15.2, platform=tvOS Simulator,OS=17.2,name=Apple TV 4K (3rd generat...	4m 43s
linux (amazonlinux2, 5.7)	6m 50s
apple (macos-14-xlarge, Xcode_15.2, platform=OS X)	4m 24s
linux (amazonlinux2, 5.9)	6m 47s
	58m 23s

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