Showing appointments

1st Iteration:
* [ ] List of bookable appointments
* [ ] Each have modal
* [ ] Show first x then pag
* [ ] Make first step job selection optional

2nd Iteration:
* [ ] Show job stuff first if selected
* [ ] Pay for booked lessons

https://github.com/tutorcruncher/TutorCruncher2/issues/5143
https://github.com/tutorcruncher/TutorCruncher2/issues/4202