Add keybinds for deselect [ESC] and restore selection [E]#337

cmalinmayor merged 2 commits intomainfunkelab/motile_tracker:mainfrom

325-mouse-button-controls-for-more-refined-node-selectionfunkelab/motile_tracker:325-mouse-button-controls-for-more-refined-node-selectionCopy head branch name to clipboard