Initial commit of piet-next API sketch #1616

# to view logs

Job	Run time
cargo test (windows-latest)	30s
cargo test (macos-latest)	30s
cargo test (ubuntu-latest)	38s
cargo clippy (windows-latest)	32s
cargo check (msrv) (windows-latest)	30s
cargo clippy (macos-latest)	29s
cargo check (msrv) (wasm32)	29s
cargo check (msrv) (macos-latest)	29s
cargo clippy (wasm32)	27s
cargo clippy (ubuntu-latest)	39s
cargo check (msrv) (ubuntu-latest)	33s
compare snapshots (windows-latest)	1m 11s
cargo doc (windows-latest)	39s
formatting	21s
compare snapshots (macos-latest)	26s
cargo doc (macos-latest)	36s
cargo test (wasm32)	27s
cargo doc (ubuntu-latest)	40s
compare snapshots (ubuntu-latest)	37s
typos	6s
	10m 49s

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