Rust

improve ApproxPercentileAccumulator merge api and fix bug #567

Job	Run time
cargo test (macos)	33m 14s
cargo check	7m 58s
cargo test (macos-aarch64)	3m 1s
build with wasm-pack	2m 11s
Verify Vendored Code	54s
cargo test (win64)	42m 8s
Check cargo fmt	45s
Verify MSRV (Min Supported Rust Version)	6m 41s
cargo test (amd64)	9m 13s
cargo examples (amd64)	10m 19s
cargo test datafusion-cli (amd64)	3m 46s
check Cargo.toml formatting	2m 50s
clippy	4m 52s
circular dependency check	2m 40s
check configs.md is up-to-date	2m 40s
cargo test hash collisions (amd64)	8m 30s
cargo test doc (amd64)	11m 40s
Run sqllogictest with Postgres runner	3m 21s
cargo doc	3m 32s
cargo test pyarrow (amd64)	2m 39s
verify benchmark results (amd64)	10m 24s
	2h 53m 18s

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