Allow to setup an icon on macro action

Goal

Have an Icon in the macro toolbar instead of the macro name.

UI to manage icon will need more work and is postponed.

See abandonned proposal

UI

On Macro / import New macro, after script is chosen, a new dialog ask for an icon (svg or png).

Dev

* chosen image is copied inside macro user directory and renamed according to the macro.

Implementation

• when populating macro list from directories, look for a png / svg file with same name than macro. If present, set it as the action icon.
• removing macro also removed icon