Proof-of-concept for adding assets w/ materials

Steps:
-Use Import dialogue to add .fbx file to the Content Browser
-Use Import dialogue to add _TEX, _NRM, and _GLO (if relevant) to the
Content Browser
-Drag and drop the model into the scene
-Select the model, and double-click on its material to bring up the
material editor
-Drag and drop the _TEX, _NRM, and _GLO (if it has one) into the
material editor
-Delete any existing connections
-Connect the _TEX to the Base Color channel
-Connect the _NRM to the Normal channel
-Connect the _GLO to the Emissive channel

That will give you a textured model in the scene
Changed UI font to Helvetica