Implement conversion from ColumnStatistics to NullableInterval #27

Job	Run time
build with wasm-pack	2m 14s
Check cargo fmt	45s
cargo test (macos)	11m 3s
cargo check	4m 41s
cargo test (macos-aarch64)	10m 30s
Verify MSRV (Min Supported Rust Version)	6m 11s
Verify Vendored Code	53s
cargo test (win64)	34m 31s
cargo doc	3m 36s
clippy	4m 51s
cargo test hash collisions (amd64)	9m 14s
check Cargo.toml formatting	2m 58s
cargo test (amd64)	9m 25s
cargo test datafusion-cli (amd64)	3m 46s
cargo test doc (amd64)	11m 25s
cargo examples (amd64)	38s
Run sqllogictest with Postgres runner	3m 16s
cargo test pyarrow (amd64)	2m 31s
verify benchmark results (amd64)	10m 36s
check configs.md is up-to-date	2m 40s
	2h 15m 44s

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