Discord DeskThing UX refresh: call controls settings, display names, media cleanup, panel controls, 0.2.2

[bennybrainless]

Change Log

• Added settings to control the size and position of the call controls.
• Fixed the Current Channel panel so that it loads messages.
• Updated toast notifications to be larger, show more details about the sender and their sever or direct message.
• Now using DisplayNames throughout the app instead of usernames or user IDs.
• Added a setting to control the relative size of the left and right panels.
• Added font size settings to the Current Chat Channel Messages.
• Added a duration setting for toast messages.
• Added a header to the call participants panel that shows the server and voice channel name.
• A million behind the scenes changes to make sure mute/deaf status sync properly with reality even if the Deskthing isn't used to do the toggling.
• Another million behind the scenes changes to make sure channel and participant information loads correctly, even when changing channels.

Known Issues:

• Timestamps are currently malformed in chat messages
• @mentions aren't loading displaynames correctly for messages sent prior to loading the channel.