Replace wasm engine with walrus #1996

Job	Run time
build-test-on-android (x86, 28)	30m 25s
build-test-on-android (x86_64, 28)	29m 2s
build-by-clang	5m 34s
build-on-macos	5m 52s
build-on-windows-x64-uwp-x86-shared	9m 29s
build-test-api	7m 19s
build-test-codecache	8m 4s
build-test-debugger	4m 6s
build-test-on-x64-release (new-es octane v8)	8m 6s
build-test-on-x64-release (new-es octane v8, -DESCARGOT_THREADING=ON -DESCARGOT_TCO=ON)	8m 13s
build-test-on-x64-release (chakracore spidermonkey)	8m 20s
build-test-on-x64-release (chakracore spidermonkey, -DESCARGOT_THREADING=ON -DESCARGOT_TCO=ON)	10m 11s
build-test-on-x64-release (chakracore spidermonkey, -DESCARGOT_SMALL_CONFIG=ON -DESCARGOT_USE_CUS...	8m 51s
build-test-on-x86-release (octane)	7m 33s
build-test-on-x86-release (v8 chakracore spidermonkey)	12m 16s
build-test-on-x86-release (jetstream-only-simple-parallel-1)	10m 21s
build-test-on-x86-release (jetstream-only-simple-parallel-2 jsc-stress)	9m 6s
build-test-on-x86-release (jetstream-only-simple-parallel-3 jetstream-only-cdjs)	7m 35s
build-test-on-x86-x64-debug	9m 11s
build-test-wasmjs	9m 3s
check-tidy	1m 17s
test-on-windows-clang-cl (x86, -m32)	10m 29s
test-on-windows-x86-x64 (x86)	55m 54s
test-on-windows-x86-x64 (x64)	46m 42s
	5h 22m 59s

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