Added different ways to select/deselect things...
The following PR gives all of Bonsai's "select" buttons (by class, similar value, type, material, container, group, aggregate…) one consistent modifier scheme: Click selects, SHIFT+Click removes the matches from your selection, CTRL+Click filters your selection down to just the matches, and ALT+Click also unhides them. CTRL+ALT+Click opens a dialog prefilled with the active object's value that you can edit into a regex — e.g. trim WallType-Interior-01 to Interior — with an Add/Remove/Filter dropdown. Buttons that previously used CTRL for something else (one-level-deep, exclude-children, sum) keep those on CTRL+SHIFT+Click.
