Add context menu to smart script editing view

**Is your feature request related to a problem? Please describe.**
Smart Scripting editing view is missing contextual menus

**Describe the solution you'd like**
Context menu with most typical actions (copy, paste, cut, delete, edit) should be added to smart scripts view

Start by locating the Smart Scripting editing view and reading how its editing actions are currently exposed. Add a context menu with copy, paste, cut, delete, and edit actions, then verify that each action works in the Smart Scripts view.

Written by the indexing model from the issue text.