Support transforms for each widget #2261

Job	Run time
cargo check (aarch64-android)	1m 50s
cargo check (msrv) (wasm32)	27s
cargo check (msrv) (windows-latest)	2m 49s
cargo clippy (windows-latest)	7m 25s
cargo check (msrv) (macos-latest)	1m 24s
cargo clippy (macos-latest)	3m 27s
cargo clippy (wasm32)	3m 14s
cargo doc	2m 7s
cargo check (msrv) (ubuntu-latest)	1m 55s
cargo clippy (ubuntu-latest)	5m 19s
formatting	33s
cargo test (wasm32)	1m 2s
Prime LFS Cache	7s
typos	5s
cargo test (windows-latest)	7m 7s
cargo test (macos-latest)	2m 54s
cargo test (ubuntu-latest)	5m 43s
	47m 28s

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