Rust

Implement GroupsAccumulator #636

Job	Run time
Verify MSRV (Min Supported Rust Version)	5m 47s
Verify Vendored Code	1m 12s
cargo test (macos-aarch64)	9m 35s
build and run with wasm-pack	6m 2s
linux build test	6m 49s
Check cargo fmt	1m 10s
cargo examples (amd64)	16m 32s
cargo check datafusion-proto features	5m 13s
cargo check datafusion-functions features	2m 40s
cargo check datafusion-common features	1m 58s
cargo test (amd64)	16m 23s
cargo check datafusion features	10m 52s
cargo check datafusion-substrait features	12m 57s
clippy	9m 5s
check example README is up-to-date	7m 15s
cargo test doc (amd64)	10m 56s
cargo test datafusion-cli (amd64)	6m 52s
Run sqllogictest in Substrait round-trip mode	9m 2s
cargo doc	5m 35s
Run sqllogictest with Postgres runner	8m 19s
check configs.md and ***_functions.md is up-to-date	7m 53s
check Cargo.toml formatting	4m 38s
verify benchmark results (amd64)	16m 7s
	3h 2m 52s

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