Integrate code review coding standard

[polothy]

Review and then integrate https://github.com/mrmark/joule-plugincheck as a new command, like moodle-plugin-ci codereview

The project should be moved into moodlerooms Github account and should be managed similarly to https://github.com/moodlerooms/moodle-coding-standard.

The point of the new standard is to add additional checks that do not make sense for the Moodle coding standard, but are required by Moodlerooms or Moodle partners in general.

[polothy]

Note, with recent changes, we can probably just update the StandardResolver class and then run this by doing: moodle-plugin-ci codechecker --standard NAME. This is instead of adding a whole new command. Rest of the issue description is still valid.