Allow scripts to extend the tool bars

[bjorn]

Currently scripts can register custom actions through tiled.registerAction and then they can add them to various menus using tiled.extendMenu. It is however not possible to extend a tool bar.

It should be possible for scripts to extend most of the existing tool bars, probably through a tiled.extendToolBar function.

[eishiya]

Somewhat related: It would be very useful if scripted Tools could have toggles to their tool-specific toolbar, like some of the native tools do. I suspect this would need to be done differently from extendToolbar though.

[bjorn]

@eishiya Yes, that's a somewhat different feature. Such actions or toggles are mostly just actions added to the tool bar, so I guess it would be best in this case to add a property to the ScriptedTool class that is an array of action IDs, which will be added to this tool bar.

[bjorn]

Alright, Tool.toolBarActions done. :-)

[user72356]

Interested in tiled.extendToolBar as well