docs: add documentation site #389

Job	Run time
build (macos, module-legacy, cpp)	1s
build (macos, module-legacy, java-swift)	1s
build (macos, module-legacy, java-objc)	1s
build (macos, module-mixed, cpp)	1s
build (macos, module-mixed, java-objc)	1s
build (macos, module-new, cpp)	1m 34s
build (macos, module-new, java-objc)	1m 36s
build (macos, view-legacy, java-objc)	1m 44s
build (macos, view-legacy, java-swift)	1m 30s
build (macos, view-mixed, java-objc)	1m 31s
build (ubuntu, module-legacy, cpp)	51s
build (ubuntu, module-legacy, java-swift)	1m 4s
build (macos, view-new, java-objc)	1s
build (ubuntu, library, js)	1m 37s
build (ubuntu, module-legacy, java-objc)	46s
build (ubuntu, module-legacy, kotlin-swift)	48s
build (ubuntu, module-legacy, kotlin-objc)	50s
build (ubuntu, module-mixed, cpp)	47s
build (ubuntu, module-mixed, kotlin-objc)	54s
build (ubuntu, module-new, cpp)	48s
build (ubuntu, module-mixed, java-objc)	53s
build (ubuntu, module-new, java-objc)	1m 1s
build (ubuntu, module-new, kotlin-objc)	50s
build (ubuntu, view-legacy, java-objc)	54s
build (ubuntu, view-legacy, java-swift)	1m 2s
build (ubuntu, view-legacy, kotlin-swift)	51s
build (ubuntu, view-legacy, kotlin-objc)	50s
build (ubuntu, view-mixed, java-objc)	52s
build (ubuntu, view-mixed, kotlin-objc)	1m 7s
build (ubuntu, view-new, java-objc)	55s
build (ubuntu, view-new, kotlin-objc)	54s
	26m 35s

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