Rust

example of stateless execution for projection exec #81

Job	Run time
build and run with wasm-pack	2m 43s
Verify Vendored Code	1m 31s
linux build test	2m 39s
Check cargo fmt	1m 9s
cargo test (macos-aarch64)	2m 31s
Verify MSRV (Min Supported Rust Version)	2m 40s
cargo test (amd64)	1s
cargo check datafusion-common features	1s
cargo check datafusion-functions features	1s
cargo test datafusion-cli (amd64)	1s
cargo examples (amd64)	1s
cargo check datafusion features	1s
Run sqllogictest with Postgres runner	1s
check configs.md and ***_functions.md is up-to-date	1s
check example README is up-to-date	1s
check Cargo.toml formatting	1s
clippy	1s
verify benchmark results (amd64)	1s
cargo check datafusion-substrait features	1s
cargo check datafusion-proto features	1s
cargo doc	1s
cargo test doc (amd64)	1s
Run sqllogictest in Substrait round-trip mode	1s
	13m 30s

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