ColorAndToolOptions has now the same code for left and right tool options, with more similar refactoring coming soon to places like Canvas and DrawingAlgos
Instead of having 2 variables for left & right nodes, use an array instead. This will help with better looking code, automation and less repetitive code, as seen in ToolButtons.gd. Move related refactoring will follow.
Removed the tool option signals from Main.gd and put them to ColorAndToolOptions.gd. Instead of having 2 methods for left and right, they are now in one method, using a boolean to differentiate between left and right.
