feat(plugins/repositories): add plugin_repository_starred and plugin_repository_random

[lowlighter]

Discussed in #1174

^{Originally posted by Andre601 August 5, 2022}
I have an idea for 2 new options for the repository plugin I want to share:

Most starred

plugin_repository_starred: <number> would display <number> amounts of repositories from your account, sorted by their star count.

Example config:

name: Featured repositories
uses: lowlighter/metrics@latest
with:
  filename: metrics.plugin.repositories.svg
  token: ${{ secrets.METRICS_TOKEN }}
  base: ""
  plugin_repositories: yes
  # Displays 3 repositories
  plugin_repositories_starred: 3

Random

plugin_repository_random to display a random repository from your account.

Example config:

name: Featured repositories
uses: lowlighter/metrics@latest
with:
  filename: metrics.plugin.repositories.svg
  token: ${{ secrets.METRICS_TOKEN }}
  base: ""
  plugin_repositories: yes
  # Displays 3 repositories
  plugin_repositories_random: yes
```</div>