Implement User Timing Level 3 #1591

Job	Run time
Clippy	5m 13s
Check	59s
Rustfmt	8s
Run wasm-bindgen crate tests with multithreading enabled	1m 26s
Run wasm-bindgen crate tests (unix)	11m 31s
Verify that web-sys is compiled correctly	44s
Run js-sys crate tests	1m 56s
Run native tests	1m 42s
Run web-sys crate tests	3m 54s
Run wasm-bindgen-webidl crate tests	2m 2s
build_benchmarks	47s
build_examples	3m 20s
build_nightly	1m 47s
dist_linux_aarch64_gnu	2m 35s
dist_linux_x86_64_musl	2m 35s
dist_macos_x86_64	3m 48s
Build and test the deno example	47s
Test TypeScript output of wasm-bindgen	1m 13s
Run UI compile-fail tests	2m 28s
dist_windows	3m 26s
dist_macos_aarch64	1m 58s
doc_api	1m 15s
doc_book	18s
test_examples	1m 52s
deploy	1m 4s
	58m 48s

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