ui: custom calendar component

[Forfold]

What problem would you like to solve? Please describe: Throughout the lifecycle of GoAlert, we have transitioned a few times between various calendar solutions for viewing GoAlert shifts. As we've continued to build GoAlert, we've found ourselves always needing to "patch" something related to our current calendar package to make it fit our needs- to the point where we have even contributed to the main lib.

I think it's time we think about creating our own calendar component (again), keeping core GoAlert features in mind that will be useful for both the on-call engineer, as well as anybody viewing a schedule making operational on-call changes.

Describe the solution you'd like: I'd like to use this issue as a point of discussion for what would be needed and valuable to include in a calendar component that would consider it feature complete. I'll start a list below that we can keep updated.

Features:

• Native Luxon support
• Monthly view
• Weekly view
• Daily view
• Preference to set timezone
• Visual difference between assignments, overrides, and temporary schedules
• Event order placement/sorting by day
• Encourage proper use of overrides and temporary schedules
  • e.g. A second "remove" override is sometimes created when attempting to delete an existing override, rather than clicking "delete" on the existing override, which would properly revert the schedule
• Historical shifts are rendered differently
  • Needs to be super obvious, hard to tell currently what is historical
  • Potentially don't render historical shifts < 10min, option to show all if needed

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity.

[dctalbot]

We should explore some alternatives and evaluate what needs we have

• https://fullcalendar.io

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity.