Revise WASM cache structure #2293

Job	Run time
build-test-api	3m 59s
build-on-macos	11m 30s
build-on-windows-x64-uwp-x86-shared	6m 56s
build-by-clang	4m 33s
build-test-codecache	16m 46s
build-test-debugger	3m 44s
build-test-on-android (x86, 28)	15m 1s
build-test-on-self-hosted-arm64-linux	13m 54s
build-test-on-android (x86_64, 28)	15m 48s
build-test-on-self-hosted-arm-linux	14m 26s
build-test-on-self-hosted-linux	23m 55s
build-test-on-x64-release (octane v8 web-tooling-benchmark)	15m 56s
build-test-on-x86-release (new-es octane)	6m 2s
build-test-on-x64-release (octane v8 web-tooling-benchmark, -DESCARGOT_THREADING=ON -DESCARGOT_TC...	15m 54s
build-test-wasmjs	4m 24s
build-test-on-x86-release (v8 chakracore spidermonkey)	7m 44s
build-test-on-x64-release (chakracore spidermonkey new-es)	5m 39s
build-test-on-x86-x64-debug	4m 40s
build-test-on-x64-release (chakracore spidermonkey new-es, -DESCARGOT_THREADING=ON -DESCARGOT_TCO...	5m 49s
build-test-on-x64-release (chakracore spidermonkey new-es, -DESCARGOT_SMALL_CONFIG=ON -DESCARGOT_...	5m 1s
check-tidy	56s
build-test-on-x86-release (jetstream-only-simple-parallel-1)	3m 24s
test-on-windows-clang-cl (x86, -m32)	9m 6s
build-test-on-x86-release (jetstream-only-simple-parallel-2 jsc-stress)	4m 0s
test-on-windows-x86-x64 (x86)	25m 48s
test-on-windows-x86-x64 (x64)	24m 47s
build-test-on-x86-release (jetstream-only-simple-parallel-3 jetstream-only-cdjs)	4m 25s
	4h 34m 7s

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