Migrate priorityEnglish auction api to websocket
- Move notifications generation to backend side:
- auction started
- t&c confirmed
- new round started
- current tenant notification about his role
- priority round was started
- bid was made
- bid has errors
- cancel bids
- ect.
- Add websocket messages:
- make_bid
- cancel_bid
- Move search data mapping to feed schema to backend side