This PR introduces multiple GitHub Actions to automate the release
procedure. In brief, it contains:
- **For nightly releases**: A fully automated GitHub Action that updates
dependencies (including dependencies of typstyle, typst.ts, and
typst-ansi-hl), releases nightly RC (aka canary version in the action
script) and nightly builds, along with its helper script (which can also
be useful for manually updating versions).
- **For stable releases**: Two GitHub Actions, one that detects newly
opened PRs containing tagging directives (`+Tag vx.y.z-rcw`) and leaves
comments, and another that detects merged tagging PRs and performs the
actual tagging.
Examples:
- Nightly release:
4708018995
- Stable release: ParaN3xus/tinymist#1, ParaN3xus/tinymist#2
Extra work needed to merge this PR:
- [ ] Remove all `nightly/*` branches and create `nightly` branch
- [ ] Add `NIGHTLY_REPO_TOKEN` secret to this repo
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Co-authored-by: Myriad-Dreamin <camiyoru@gmail.com>
