Customize install

[mbway]

• Replaces the limited site install --preset options with full parsing of maturin commands
• automatic detection of when --uv is required (site install --no-detect-uv to disable).
• automatic --color always when not specified
• enable/disable project or rs file importer with --project-importer/--no-project-importer and --rs-file-importer/--no-rs-file-importer

eg:

python -m maturin_import_hook site install \
    --force --no-rs-file-importer --args="--release --uv --features feature1,feature2 -- --cfg foo"

writes the following:

...
    maturin_import_hook.install(
        settings=MaturinSettings(
            release=True,
            features=['feature1', 'feature2'],
            color=True,
            rustc_flags=['--cfg', 'foo'],
            uv=True
        ),
        enable_project_importer=True,
        enable_rs_file_importer=False,
    )

the MaturinDevelopSettings and MaturinBuildSettings are merged with MaturinSettings as inheritance was not really the correct tool. With the inheritance approach it was impossible to set both maturin build and maturin develop settings simultaneously.