[Suggestion] Add 'Tabs' to the Options window

[JohannesMP]

Given that more settings will be added to the options window in the future, I think it might make sense to add a row of buttons at the top which determine the content that is shown in the Options window. These would effectively be 'Tabs' that allow you to chose what settings to edit.

Possible Tabs would include:

• Player (for player name/color)
• Performance (for cache)
• Keybindings
• Chat (for chat and individual channel-specific settings)
• Admin (for DMPModControl, etc)

Clicking any one of these tabs would populate the options window with the relevant options. I don't think this needs to be the same kind of hide/show functionality as the Debug window uses, but instead only one section can be selected at a time.

When you first open the Options window it should probably default to the 'Player' tab