Rust

Support timestamp(n) type #317

Job	Run time
Check cargo fmt	40s
cargo check	11m 20s
build with wasm-pack	2m 43s
cargo test (macos)	10m 51s
cargo test (macos-aarch64)	13m 7s
Verify MSRV (Min Supported Rust Version)	8m 48s
Verify Vendored Code	53s
cargo test (win64)	1h 7m 33s
cargo test (amd64)	11m 16s
cargo examples (amd64)	13m 51s
clippy	5m 49s
check configs.md and ***_functions.md is up-to-date	3m 13s
cargo doc	4m 19s
cargo test hash collisions (amd64)	17m 17s
cargo test datafusion-cli (amd64)	3m 51s
cargo test doc (amd64)	15m 45s
Run sqllogictest with Postgres runner	3m 36s
cargo test pyarrow (amd64)	2m 56s
verify benchmark results (amd64)	12m 24s
check Cargo.toml formatting	3m 1s
	3h 33m 13s

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