Rust

Simplify `EXPR LIKE 'constant'` to `expr = 'constant'` #344

Job	Run time
cargo check	12m 12s
cargo test (win64)	1h 2m 12s
Check cargo fmt	43s
build with wasm-pack	2m 31s
cargo test (macos-aarch64)	8m 6s
cargo test (macos)	8m 43s
Verify MSRV (Min Supported Rust Version)	8m 44s
Verify Vendored Code	44s
cargo examples (amd64)	13m 43s
cargo test datafusion-cli (amd64)	4m 6s
clippy	6m 2s
check Cargo.toml formatting	3m 27s
check configs.md and ***_functions.md is up-to-date	3m 8s
cargo test hash collisions (amd64)	17m 13s
cargo doc	4m 33s
cargo test (amd64)	11m 29s
cargo test doc (amd64)	16m 0s
Run sqllogictest with Postgres runner	3m 38s
cargo test pyarrow (amd64)	3m 7s
verify benchmark results (amd64)	13m 1s
	3h 23m 22s

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