Rust

Wrap immutable plan parts into Arc #91

Job	Run time
Check cargo fmt	1m 34s
linux build test	4m 55s
Verify Vendored Code	1m 36s
cargo test (macos-aarch64)	20m 4s
Verify MSRV (Min Supported Rust Version)	4m 54s
build and run with wasm-pack	5m 29s
cargo check datafusion-functions features	2m 47s
cargo check datafusion-proto features	4m 28s
cargo check datafusion features	11m 43s
cargo test (amd64)	11m 38s
cargo check datafusion-common features	2m 27s
cargo check datafusion-substrait features	10m 51s
check configs.md and ***_functions.md is up-to-date	5m 3s
check example README is up-to-date	34s
check Cargo.toml formatting	3m 32s
cargo test datafusion-cli (amd64)	5m 12s
Run sqllogictest in Substrait round-trip mode	6m 47s
verify benchmark results (amd64)	10m 37s
cargo doc	5m 3s
clippy	5m 33s
cargo examples (amd64)	12m 10s
cargo test doc (amd64)	8m 8s
Run sqllogictest with Postgres runner	6m 19s
	2h 31m 24s

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