Updated PanelContainer to use TabPanel stylebox variant.
Updated structure of Scene.
Added UserGames panel to the panel.
Updated code to handle clearing of other panels, if the chatter is null,
otherwise populate information in the other panels.
Added resized signal connect, to set the UserGames panel to an even
split between the lists of games, and the game info panels.
Ensure that TwitchUserInfo, UserPromo and UserGames are properly updates
with the correct information on becoming ready in the SceneTree.
