added `moshi-*` scripts/entrypoints to pyproject.toml

[ErikBjare]

Checklist

• [x] Read CONTRIBUTING.md, and accept the CLA by including the provided snippet. We will not accept PR without this.
• [x] Run pre-commit hook.
• [x] If you changed Rust code, run cargo check, cargo clippy, cargo test.

CLA

I, Erik Bjäreholt (@ErikBjare), confirm that I have read and understood the terms of the CLA of Kyutai-labs, as outlined in the repository's CONTRIBUTING.md, and I agree to be bound by these terms.

PR Description

With this change you can now install moshi with:

• pipx install moshi (once it's on PyPI)
• pipx install -e ./moshi/moshi (which I tested)

This wasn't possible before since pipx requires a valid entrypoint to allow installation.

[adefossez]

Also you need to agree to the CLA by following the instructions in contributing.md

[ErikBjare]

Alright, fixed it up and got it running now. Very cool!

Let me know if there's anything else I should do.

[adefossez]

final nit before I can accept

[ErikBjare]

Fixed!