Implement CRDs to track polls and reminders instead of configmaps

Created by: HighSaltLevels

I've created CRDs before. Check out this old abandoned attempt at a project for good examples. CRs would be much better because I can have more granular control over the data instead of having to shove dicts and arrays into a string and do weird parsing around that.

Acceptance Criteria:

• CRs are used to manage polls and reminders instead of configmaps