chore: make some fields of booking_schedule read-only after creation and add fields to __str__ function of Schedule model

Configure view in homepage to have search function by fixing queries.
Added most of needed info in templates to test.
Configure urls in main project and app.

Allow for user to be redirected to new screen when they click
the row for booking id to see more details.
Additional chore: Push to repo modified settings.py to encrypt .env