xilem: Button with customisable label(text) #2439

Job	Run time
cargo check (msrv) (wasm32)	19s
cargo clippy (windows-latest)	5m 2s
cargo check (aarch64-android)	23s
cargo check (msrv) (windows-latest)	2m 13s
cargo clippy (macos-latest)	2m 57s
cargo clippy (ubuntu-latest)	3m 19s
cargo check (msrv) (macos-latest)	41s
cargo clippy (wasm32)	1m 54s
cargo doc	1m 53s
cargo check (msrv) (ubuntu-latest)	37s
formatting	15s
Prime LFS Cache	7s
cargo test (wasm32)	27s
typos	4s
cargo test (windows-latest)	3m 17s
cargo test (macos-latest)	2m 7s
cargo test (ubuntu-latest)	3m 38s
	29m 13s

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