Allow Quick Drop shortcut strings to launch plugin VIs

[CMal]

Quick Drop plugin VIs can currently be assigned to Ctrl-Key shortcuts.  This is a great way to quickly invoke the plugins that I use most.  However, it effectively limits the number of available plugins to 26, and it makes it fairly difficult to remember which Ctrl keys correspond to which plugins when there are a lot of custom plugins to choose from.  I would like the option to invoke Quick Drop plugins with multicharacter shortcut strings, the same way I can drop common panel and diagram objects with shortcut strings.  One possible way to do this could be to allow plugins to be included with the other shortcut objects in the Front Panel or Block Diagram shortcuts: