Initial commit of piet-next API sketch #1615

Job	Run time
cargo clippy (windows-latest)	29s
cargo test (windows-latest)	34s
cargo clippy (macos-latest)	29s
cargo test (macos-latest)	33s
cargo clippy (ubuntu-latest)	37s
cargo check (msrv) (wasm32)	22s
cargo test (ubuntu-latest)	37s
cargo check (msrv) (windows-latest)	29s
cargo check (msrv) (macos-latest)	29s
cargo check (msrv) (ubuntu-latest)	37s
cargo clippy (wasm32)	23s
compare snapshots (windows-latest)	1m 5s
cargo doc (windows-latest)	33s
formatting	19s
compare snapshots (macos-latest)	37s
cargo test (wasm32)	21s
cargo doc (macos-latest)	26s
compare snapshots (ubuntu-latest)	37s
cargo doc (ubuntu-latest)	32s
typos	4s
	10m 13s

Provide feedback