Support marking columns as system columns via Field's metadata #37647

Job	Run time
Check License Header	2m 31s
build with wasm-pack	3m 38s
Check cargo fmt	45s
linux build test	4m 36s
cargo test (macos-aarch64)	15m 11s
Verify MSRV (Min Supported Rust Version)	10m 25s
Verify Vendored Code	56s
cargo test (amd64)	14m 3s
cargo test datafusion-cli (amd64)	5m 23s
cargo check functions	2m 22s
cargo check datafusion	5m 41s
cargo check no default features	9m 54s
cargo test doc (amd64)	19m 22s
cargo examples (amd64)	16m 40s
clippy	8m 9s
cargo doc	5m 47s
Run sqllogictest with Postgres runner	5m 23s
cargo test pyarrow (amd64)	3m 19s
verify benchmark results (amd64)	9m 20s
check Cargo.toml formatting	3m 11s
check configs.md and ***_functions.md is up-to-date	4m 26s
	2h 31m 2s

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