feat: Support `--manifest-path` to project directory #463

Job	Run time
Cargo Machete	1m 3s
determine changes	6s
pre-commit	37s
build binary \| linux x86_64	1m 52s
build binary \| windows aarch64	3m 56s
build binary \| macos aarch64	2m 43s
build binary \| macos x86_64	0s
build binary \| windows x86_64	3m 53s
cargo test \| ubuntu	4m 25s
cargo test \| macos aarch64	4m 41s
cargo test \| macos x86_64	0s
cargo test \| windows	6m 49s
cargo rustdoc \| ubuntu	1m 2s
cargo fmt \| ubuntu	13s
cargo clippy \| ubuntu	49s
Pytest \| linux x86_64	1m 5s
Integration tests \| linux x86_64	0s
Downstream tests \| linux x86_64	0s
Wheel Tests \| linux x86_64 / Test Installation of Common Wheels \| linux-x86_64	1m 50s
Pytest \| macos aarch64	1m 45s
Integration tests \| macos aarch64	0s
Downstream tests \| macos aarch64	0s
Wheel Tests \| macos aarch64 / Test Installation of Common Wheels \| macos-aarch64	1m 47s
Pytest \| windows x86_64	5m 19s
Integration tests \| windows x86_64	0s
Downstream tests \| windows x86_64	0s
Wheel Tests \| windows x86_64 / Test Installation of Common Wheels \| windows-x86_64	2m 30s
	46m 25s

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