Automatically generate the summaries

[MV-GH]

Fixes #5

---

PR-Codex overview

This PR focuses on adding summaries to the API routes in the lemmy_spec.yaml file.

Detailed summary

• Added a new script add_summaries.ts to read summaries from the lemmy-js-client source files and write them to the api_routes.yaml spec.
• Updated the lemmy_spec.yaml file to include summaries for various API routes.
• Added new dependencies tsutils@^3.21.0 and yaml@^2.3.2 in package.json.
• Updated the scripts section in package.json to include the new script add_summaries.
• Updated the yarn.lock file with new versions of tslib and tsutils.
• Added new code in src/add_summaries.ts to parse comments and extract summaries from the source file.

The following files were skipped due to too many changes: lemmy_spec.yaml, partials/api_routes.yaml

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}