Rust

[datafusion-spark] Add Spark-compatible `char` expression (#15994) #1

Job	Run time
build and run with wasm-pack	6m 39s
cargo test (macos-aarch64)	12m 1s
linux build test	5m 43s
Check License Header	2m 31s
Check cargo fmt	48s
Verify Vendored Code	1m 6s
Verify MSRV (Min Supported Rust Version)	9m 59s
cargo check datafusion-common features	1m 28s
cargo check datafusion features	13m 21s
cargo check datafusion-proto features	4m 47s
cargo check datafusion-substrait features	9m 49s
cargo test (amd64)	14m 27s
cargo examples (amd64)	17m 3s
cargo test doc (amd64)	20m 1s
clippy	6m 24s
check configs.md and ***_functions.md is up-to-date	4m 32s
cargo check datafusion-functions features	2m 52s
cargo test pyarrow (amd64)	4m 46s
verify benchmark results (amd64)	9m 30s
cargo test datafusion-cli (amd64)	5m 19s
cargo doc	4m 29s
Run sqllogictest with Postgres runner	6m 32s
check Cargo.toml formatting	4m 7s
	2h 48m 14s

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