Rust

fix: Box `WindowFunction` in `ExprFuncKind` enum to reduce enum total… #149

Job	Run time
linux build test	5m 41s
build and run with wasm-pack	6m 49s
cargo test (macos-aarch64)	13m 29s
Spell Check with Typos	8s
Verify MSRV (Min Supported Rust Version)	10m 19s
Verify Vendored Code	1m 0s
Check cargo fmt	42s
cargo check datafusion-common features	1m 14s
cargo check datafusion-substrait features	8m 54s
cargo check datafusion features	13m 34s
cargo check datafusion-functions features	2m 52s
cargo test doc (amd64)	22m 30s
cargo test pyarrow (amd64)	3m 46s
clippy	6m 31s
check Cargo.toml formatting	2m 58s
cargo check datafusion-proto features	4m 48s
cargo test (amd64)	20m 17s
cargo examples (amd64)	18m 30s
verify benchmark results (amd64)	10m 23s
cargo test datafusion-cli (amd64)	4m 16s
Run sqllogictest with Postgres runner	5m 52s
Run sqllogictest in Substrait round-trip mode	5m 50s
check configs.md and ***_functions.md is up-to-date	4m 34s
cargo doc	4m 18s
	2h 59m 15s

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