Add constructor, replace, and replaceSync methods to CssStyleSheet #1340

Job	Run time
Clippy	6m 12s
Run wasm-bindgen crate tests (unix)	11m 19s
Rustfmt	17s
Check	2m 16s
build_benchmarks	1m 54s
build_examples	5m 38s
Verify that web-sys is compiled correctly	1m 29s
build_nightly	3m 42s
dist_linux_aarch64_gnu	3m 32s
dist_linux_x86_64_musl	4m 17s
dist_macos_aarch64	3m 43s
dist_macos_x86_64	3m 25s
dist_windows	4m 35s
doc_api	1m 29s
doc_book	13s
Build and test the deno example	1m 20s
Run js-sys crate tests	3m 27s
Run wasm-bindgen crate tests with multithreading enabled	2m 23s
Test TypeScript output of wasm-bindgen	1m 31s
Run native tests	2m 43s
Run UI compile-fail tests	3m 40s
Run web-sys crate tests	5m 8s
Run wasm-bindgen-webidl crate tests	4m 27s
test_examples	3m 10s
deploy	2m 28s
	1h 24m 18s

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