feat: support editable installs for `pixi build` #219

Job	Run time
determine changes	8s
pre-commit	32s
Cargo Machete	1m 4s
cargo rustdoc \| ubuntu	29s
cargo test \| ubuntu	1m 18s
cargo fmt \| ubuntu	17s
cargo test \| windows	2m 14s
cargo test \| macos aarch64	1m 20s
cargo clippy \| ubuntu	23s
build binary \| linux x86_64	1m 26s
build binary \| macos aarch64	49s
build binary \| macos x86_64	0s
build binary \| windows aarch64	1m 6s
build binary \| windows x86_64	1m 6s
cargo test \| macos x86_64	0s
test wheel installation \| macos aarch64	0s
pytest integration \| macos aarch64	0s
test wheel installation \| linux x86_64	0s
pytest integration \| linux x86_64	0s
test wheel installation \| windows x86_64	0s
pytest integration \| windows x86_64	0s
	12m 12s

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