This PR moves the spelling check out of the `check_style` action, which
we can leave for just checking formatting.
We can't use the `crates-ci-typos` action as-is on the macOS runners due
to the absence of `wget`.
Release Notes:
- N/A
- Closes: https://github.com/zed-industries/zed/issues/19351
- Switch to using the official [typos GitHub Action](https://github.com/crate-ci/typos/blob/master/docs/github-action.md)
- Move the typos check into `actions/check_style`
- Move Squawk Postgres migration check out of `actions/check_style` file into ci.yml
- `actions/check_style` can now be run on stateless/linux runners (previous required self-hosted MacOS runner)
- ci.yml: Split old `style` into checks into those that can run statelessly (linux) and everything else into a new `migration` group which benefit from the full git checkout available on the MacOS runners.
- ci.yml: Move `Check unused dependencies` from style to `linux_tests`
- Add `if: github.repository_owner == 'zed-industries'` to all jobs so they won't try and run on GitHub forks.
Those were not installing Rust but configuring it via rustup, and
those configurations were done on `stable` toolchain which is not what we use (see rust-toolchain.toml)
co-authored-by: Piotr <piotr@zed.dev>
