feat: improve string statistics display in datafusion-cli `parquet_metadata` function #21130

Job	Run time
cargo check	2m 34s
Check cargo fmt	27s
build with wasm-pack	1m 51s
Verify MSRV	6m 48s
cargo test (mac)	13m 34s
Verify Vendored Code	48s
cargo test (win64)	29m 42s
cargo test doc (amd64)	9m 37s
cargo test datafusion-cli (amd64)	2m 58s
clippy	4m 9s
check Cargo.toml formatting	1m 21s
check configs.md is up-to-date	2m 24s
cargo test hash collisions (amd64)	8m 40s
cargo doc	3m 11s
cargo test (amd64)	9m 16s
cargo examples (amd64)	6m 19s
Run sqllogictest with Postgres runner	3m 6s
cargo test pyarrow (amd64)	2m 15s
verify benchmark results (amd64)	9m 32s
	1h 58m 32s

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