Addresses#9

Added keybinds for all tools
(Note the numbers are the number row and not numpad numbers)
1$$\rightarrow$$ Toggles displace
2$$\rightarrow$$ Toggles move
3$$\rightarrow$$ Toggles add
4$$\rightarrow$$ Toggles delete
5 + a state is selected$$\rightarrow$$ Opens controls
6$$\rightarrow$$ Toggles connect
Ctrl + S$$\rightarrow$$ Save FSM
Delete + a state is selected$$\rightarrow$$ Deletes selected state
Escape$$\rightarrow$$ Deselects whatever tool is currently selected, and closes Save FSM popup

1 major code change due to this implementation, the delete code that was previously inhandleNodeClick for deleting a node has been moved to a function to allow the delete keybind to work.