feat!: Closure-based reader-writer serde for JSON, FormURL #3166

Job	Run time
linux (jammy, 5.7)	6m 15s
apple (macos-13-xlarge, Xcode_14.1, platform=iOS Simulator,OS=16.1,name=iPhone 14)	6m 28s
linux (jammy, 5.10)	6m 20s
linux (amazonlinux2, 5.7)	6m 19s
apple (macos-13-xlarge, Xcode_14.1, platform=tvOS Simulator,OS=16.1,name=Apple TV 4K (3rd generat...	4m 55s
linux (amazonlinux2, 5.10)	6m 23s
apple (macos-13-xlarge, Xcode_14.1, platform=OS X)	4m 21s
apple (macos-14-xlarge, Xcode_15.3, platform=iOS Simulator,OS=17.4,name=iPhone 15)	5m 22s
apple (macos-14-xlarge, Xcode_15.3, platform=tvOS Simulator,OS=17.4,name=Apple TV 4K (3rd generat...	5m 8s
apple (macos-14-xlarge, Xcode_15.3, platform=OS X)	5m 25s
	56m 56s

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