Create "Last x days" group-by
## TL;DR
Add new group-by component with options Last 30 days / Last 90 days, to be used in the respective panel.
## Implementation Details
If possible to re-use another group-by of the existing panels, explore that option!
1. Add new component for group-by selection. 2 options: Last 30 days and Last 90 days
2. Use value for selected group-by that GraphQL API expects for that argument
3. Set default to 90 days
4. Import in new panel
## Testing Approach
- [x] Unit tests
- [ ] Integration tests
- [ ] Manual validation steps
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