Add bindings for `FocusOptions` #2089

Job	Run time
build_examples	3m 52s
build_nightly	1m 39s
build_benchmarks	45s
Check	56s
Verify that web-sys is compiled correctly	43s
Clippy	6m 46s
dist_linux_aarch64_gnu	2m 45s
dist_linux_x86_64_musl	2m 21s
dist_macos_aarch64	1m 19s
dist_macos_x86_64	1m 8s
dist_windows	3m 40s
doc_api	1m 8s
doc_book	5s
Rustfmt	10s
Build and test the deno example	50s
Run js-sys crate tests	2m 30s
Run native tests	1m 51s
Run wasm-bindgen crate tests with multithreading enabled	1m 23s
Test TypeScript output of wasm-bindgen	1m 20s
Run UI compile-fail tests	42s
Run wasm-bindgen crate tests (unix)	6m 24s
Run web-sys crate tests	5m 2s
Run wasm-bindgen-webidl crate tests	2m 7s
test_examples	2m 4s
deploy	36s
	52m 6s

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