Add event creation

[pmakowski23]

• command to create event
  • Sends private message to user
    • Asks about the name of the channel to post event and reminders
    • Asks about description
    • Asks about the date (format 7 march 2022)
    • Asks about the time (format 17:00 - 18:00)
    • Asks if event is recurring
    • Asks about possible responses
      • user can choose default (Going, Tenative, Not going)
      • or before used (data from db)
      • if not can specify custom responses
        • icon
        • name
    • Asks about roles to mention
    • Asks about the reminder
      • when to send reminder (time relative to event)
      • who to mention (users who responded in specific way, guild roles)
  • After each question ask user if data is proper and give option to change it.
• Google calendar sync
• sends reminder before event
• during event
  • Creates thread with event name