Add constructor, replace, and replaceSync methods to CssStyleSheet #1356

Job	Run time
build_benchmarks	1m 35s
build_examples	6m 16s
Check	1m 53s
build_nightly	2m 8s
Verify that web-sys is compiled correctly	1m 30s
Clippy	6m 16s
dist_linux_aarch64_gnu	3m 33s
dist_linux_x86_64_musl	4m 20s
dist_macos_aarch64	4m 39s
dist_macos_x86_64	3m 29s
dist_windows	5m 39s
doc_api	1m 38s
doc_book	11s
Rustfmt	17s
Build and test the deno example	1m 34s
Run js-sys crate tests	3m 3s
Run native tests	2m 46s
Run wasm-bindgen crate tests with multithreading enabled	4m 1s
Test TypeScript output of wasm-bindgen	1m 43s
Run UI compile-fail tests	3m 17s
Run wasm-bindgen crate tests (unix)	9m 57s
Run web-sys crate tests	7m 22s
Run wasm-bindgen-webidl crate tests	3m 26s
test_examples	3m 13s
deploy	2m 31s
	1h 26m 17s

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