Add Calendar view to the election fragment

Highlights -

1. Setup Calendar fragment.
2. Added horizontal calendar view.
3. Added Day view.
4. Added custom backgrounds for the pending, active, and finished elections.
5. Added Custom hour label.
6. Handle the case for events for more than 1 day.
7. Now events are added to the calendar view after getting election response from API.

2020_07_20_20_50_29