Add new render function for raw wgpu. #728

Job	Run time
nix-fmt-check	27s
cargo (cargo fmt --verbose --all -- --check)	1m 20s
nix-flake-check (ubuntu-latest)	31s
cargo (cargo check --locked --workspace)	3m 57s
nix-flake-check (macos-latest)	57s
cargo (cargo check --locked --examples --workspace)	3m 42s
cargo (cargo test --locked --lib --bins --workspace --features "egui")	7m 28s
cargo (cargo doc --locked --workspace --features "egui")	16m 18s
cargo (cargo test --locked -p nannou_core --no-default-features --features "libm serde")	1m 20s
cargo (mdbook build guide/)	1m 16s
cargo (cargo test --locked -p book_tests)	6m 25s
verifications	0s
cargo-publish	0s
guide-push-to-deploy	0s
	43m 41s

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