Various improvements to local chat

[JRoy]

Tracking ideas from #4509

• Config option for default shout state (Should players default to local or shout mode)

  • chat:
    ...# Whether players should be placed into shout mode by default.shout-default: false

• Persist shouting state between restarts (in userdata) (add config option for this)

  • chat:
    ...# Whether a player's shout mode should persist restarts.persist-shout: false

• Config option for question chat

  • chat:
    ...# Whether chat questions should be enabled or not.question-enabled: true

• Permission for sending to local chat (like global and question has)
  • essentials.chat.local defaults to true
• Permissions for receiving chat channels
  • Adds the following permissions which default to true: essentials.chat.receive.local, essentials.chat.receive.shout, and essentials.chat.receive.question.
• Improve local chat prefix (color, spacing)
• Using the shout prefix (! by default) while toggle shout is enabled will now send a message in local chat.

biased