Use anywhere functions

I'm exploring blueprints, and looking at how to make functions so they are useful in more than just one case.

For example, the centering of text should require few nodes each time you want to center some text, so here is a function that just needs Size Text inputs sent into the function, and it produces X and Y floats to feed into a DrawText on the HUD.

Every time a function is used efficiently it saves a lot of space and a lot of time connecting wires.