add try/except for auth, rooms and hotels APIs, add custom http exception class

add exceptions for POST /booking

add pyright; try type fix: comply with pyright, where possible

run ruff format, create pyproject.toml for ruff

add ruff, run ruff check (linter)

add e2e auth test test_auth_flow()

add api test test_add_and_get_my_bookings()

add @pytest.mark.parametrize for booking api test

create add_booking() to check whether room can be booked

add api test test_add_booking() test_get_my_bookings

add mock for fastapi_cache

add tests for facilities and hotels

rewrite test_add_booking() to test_booking_crud() and test all CRUD operations

refactor db and ac context managers

use httpx to register user, use async_session_maker_null_pool instead of async_session_maker

add background fastapi task

add celery beat, add beat schedule and task

add /images router, add POST /images for uploading image, add celery task resize_image()

add celery and use simple task