Splitting up the Github CI Workflow to Build in Parallel

[AsherGlick]

Burrito is made up of several components:

• xml_converter -the new xml parser code
• godot ui - the primary user interface
• burrito_link - the connection between the ui and gw2
• burrito-fg - a gdnative library to talk to X11
• taco_parser - an xml parser that will be replaced with xml_converter

This change causes those to all be built in parallel and then assembled at the end. One kinda big hack that is used is that burrito-fg and taco_parser are mocked when compiling the godot ui. Then once everything is compiled they are seamlessly swapped in before the final packaging.