Rename aggregation modules, GroupColumn #32656

Job	Run time
cargo check	7m 18s
Check cargo fmt	36s
build with wasm-pack	3m 7s
cargo test (macos)	9m 11s
cargo test (macos-aarch64)	11m 10s
Verify MSRV (Min Supported Rust Version)	7m 5s
Verify Vendored Code	48s
cargo test (win64)	46m 32s
cargo test hash collisions (amd64)	14m 55s
check configs.md is up-to-date	3m 1s
clippy	5m 50s
check Cargo.toml formatting	3m 12s
cargo doc	4m 20s
cargo test (amd64)	10m 3s
cargo test datafusion-cli (amd64)	3m 55s
cargo test doc (amd64)	14m 59s
cargo examples (amd64)	13m 35s
Run sqllogictest with Postgres runner	3m 51s
cargo test pyarrow (amd64)	2m 54s
verify benchmark results (amd64)	12m 58s
	2h 59m 20s

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