Explore gix APIs, experiment with gix-blame API #4818

Job	Run time
pure-rust-build	1m 59s
lint	3m 49s
test	13m 39s
test-32bit (armv7-linux-androideabi)	1m 4s
test-fast (windows-latest)	3m 13s
cargo-deny (advisories)	31s
test-fast (macos-latest)	3m 14s
test-fast (ubuntu-latest)	3m 30s
cargo-deny (bans licenses sources)	27s
check-packetline (ubuntu-latest)	4s
WebAssembly (wasm32-unknown-unknown)	1m 7s
WebAssembly (wasm32-wasi)	40s
Tests pass	1s
	33m 18s

Provide feedback