API endpoints for Events

[taiyrbegeyev]

• /events GET, POST
• get all events (filter by category, location, time)
• create new event
• /events/<evid> GET, PUT, DELETE
• can be single, recurring single or recurring (?) event
• get specific event
• update existing event
• remove existing event
• /events/<evid>/invited GET, POST
• get users that are invited to the event
• invite user to event
• /events/<evid>/confirmed GET
• get users that are attending event
• /events/<evid>/requested GET, POST
• get users that requested to join event
• request to join event
• /events/<evid>/organizing GET, POST
• get event organizers
• add event organizer