Release v3.2.1

- Add syntax highlighting for [exemplars](https://github.com/promethe…

…us/OpenMetrics/blob/main/specification/OpenMetrics.md#exemplars)

- Use proper Atom One Light/Dark theme colors

- Fix packaging script, remove macOS specific files

Manifest v3 support for Google Chrome

- Use Atom One Dark/Light theme depending on system preferences

- Removes Chrome permission 'activeTab'

Reduce Chrome permissions to 'activeTab'