nodePath & classes.go template updates, pong troubleshooting.

[pastaq]

• The defered godot_free statements in nodePath.go cause memory alloc crashes.
• Made it so classes only state they have a return value if they have a return value. Otherwise they print the function was successfull.
• Added some more debug statements to pong.go to make it clearer when blocks of code were executing for a specific node.
• Regenerated classes.go with the updates template.