Display bun.lock as json (jsonc)
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In Bun 1.1.39, Bun introduced text-based lockfile(`bun.lock`) as an alternative for its binary lockfile(`bun.lockb`), and the text-based one became the default choice as of Bun v1.2.
Bun blog([Bun's new text-based lockfile](https://bun.sh/blog/bun-lock-text-lockfile#tooling-compatibility)) says
> The bun.lock file is JSONC (like tsconfig.json)
so I think Gitlab's file view should display bun.lock with jsonc syntax highlighting. Currently, no syntax highlighting is applied to `bun.lock`.
issue