Rust

Various `ScalarValue` numeric method fixes & refactors (especially decimal) #71024

Job	Run time
Check cargo fmt	1m 15s
cargo test (macos-aarch64)	7m 56s
Check GitHub Actions install tooling	7s
build and run with wasm-pack	6m 36s
linux build test	7m 22s
Verify Vendored Code	1m 41s
Verify MSRV (Min Supported Rust Version)	2m 25s
cargo check datafusion-substrait features	12m 28s
cargo check datafusion-functions features	2m 45s
cargo test datafusion-cli (amd64)	7m 6s
cargo test (amd64)	19m 53s
cargo doc	5m 42s
cargo examples (amd64)	17m 32s
cargo test doc (amd64)	11m 14s
cargo check datafusion-common features	1m 58s
check configs.md and ***_functions.md is up-to-date	8m 21s
verify benchmark results (amd64)	17m 52s
cargo check datafusion-proto features	6m 19s
Run sqllogictest with Postgres runner	8m 40s
cargo check datafusion-ffi features	2m 29s
check Cargo.toml formatting	2m 41s
cargo check datafusion features	13m 9s
Run sqllogictest in Substrait round-trip mode	8m 57s
clippy	9m 6s
check example README is up-to-date	7m 45s
	3h 11m 19s

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