Support transforms for each widget #2254

Job	Run time
cargo check (aarch64-android)	34s
cargo check (msrv) (windows-latest)	2m 51s
cargo check (msrv) (wasm32)	21s
cargo clippy (windows-latest)	7m 55s
cargo check (msrv) (macos-latest)	1m 12s
cargo clippy (wasm32)	3m 10s
cargo clippy (macos-latest)	3m 30s
cargo check (msrv) (ubuntu-latest)	1m 41s
cargo clippy (ubuntu-latest)	5m 37s
cargo doc	40s
formatting	32s
Prime LFS Cache	10s
cargo test (wasm32)	20s
typos	6s
cargo test (windows-latest)	5m 18s
cargo test (macos-latest)	1m 30s
cargo test (ubuntu-latest)	4m 13s
	39m 40s

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