This PR prepares `bevy_lint` for v0.3.0, following the [release
guide](https://github.com/TheBevyFlock/bevy_cli/blob/e85154b9bd5851a0dcac3815853ec8194d362fb3/bevy_lint/docs/how-to/release.md).
Once this is marked ready for review, this will need at least one
approval from a Bevy maintainer and no outstanding concerns. Once this
is merged, a feature freeze will be enacted until the [post-release PR
is
merged](https://github.com/TheBevyFlock/bevy_cli/blob/e85154b9bd5851a0dcac3815853ec8194d362fb3/bevy_lint/docs/how-to/release.md#post-release).

## Blockers

- [x] #380
- [x] #389
- [x] #391

## For Reviewers

Now is your chance to look through the
[docs](https://thebevyflock.github.io/bevy_cli/bevy_lint/index.html),
the changelog, and the migration guide to ensure everything is in
working order. If you wish to test the linter, you may install it from
this branch:

```sh
rustup toolchain install nightly-2025-04-03 \
    --component rustc-dev \
    --component llvm-tools-preview

rustup run nightly-2025-04-03 cargo install \
    --git https://github.com/TheBevyFlock/bevy_cli.git \
    --branch linter-v0.3.0 \
    --locked \
    bevy_lint
```

You're encouraged to run the linter on several projects to ensure it
works correctly. Some good places to start include:

- [The Engine](https://github.com/bevyengine/bevy)
- [`bevy_new_2d`](https://github.com/TheBevyFlock/bevy_new_2d)
- [The Official
Template](https://github.com/bevyengine/bevy_github_ci_template)

Thank you for all of your help!

## Next Steps

- Release on Github
- Announce the release on Discord, Mastodon, and other social medias
- Potentially publish an announcement [blog
post](https://bd103.github.io/)
- TheBevyFlock/bevy_new_2d#365

---------

Co-authored-by: DAA <42379074+DaAlbrecht@users.noreply.github.com>