Add constructor, replace, and replaceSync methods to CssStyleSheet #1357

Job	Run time
Check	2m 4s
build_examples	4m 32s
build_nightly	2m 30s
build_benchmarks	1m 21s
Verify that web-sys is compiled correctly	1m 37s
Clippy	7m 22s
dist_linux_aarch64_gnu	3m 36s
dist_linux_x86_64_musl	4m 11s
dist_macos_aarch64	6m 34s
dist_macos_x86_64	5m 37s
dist_windows	4m 24s
doc_api	1m 21s
doc_book	31s
Rustfmt	22s
Build and test the deno example	1m 49s
Run js-sys crate tests	3m 30s
Run native tests	2m 34s
Run wasm-bindgen crate tests with multithreading enabled	2m 0s
Test TypeScript output of wasm-bindgen	1m 31s
Run UI compile-fail tests	3m 12s
Run wasm-bindgen crate tests (unix)	9m 33s
Run web-sys crate tests	9m 20s
Run wasm-bindgen-webidl crate tests	4m 38s
test_examples	3m 41s
deploy	2m 25s
	1h 30m 15s

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