Add workflow for updating rules

[bensonce]

Added a workflow that runs every two weeks to update the list of managed rules. If changes are found then a PR is opened and reviewers are automatically assigned. If for some reason no one reviews the PR before the next workflow run, the workflow should update the existing PR with changes again so multiple PRs aren't cluttering the repo.

The first PR using this workflow can be found here: #31

[duraikkannuv2]

Looks good. Thanks for adding this. We need to also update the conformance pack by running the script scripts/generate-rule-pack-info.rb

[bensonce]

Looks good. Thanks for adding this. We need to also update the conformance pack by running the script scripts/generate-rule-pack-info.rb

Good idea! I've added a new workflow for that here too. This one is manually triggered but also opens a new PR with any changes. I rewrote the script in Python and reorganized the scripts to all be in the same scripts directory. The new rule_pack_info_generator.py script was tested locally and behaves the same as the old Ruby script. You can test it locally yourself to see the changes, too.

[duraikkannuv2]

Looks good to me!