proposal for adding editing capabilities

[rossunger]

I've been using your addon and it's INCREDIBLE. I've learned a lot about making godot's UI better just by looking at your code.

Because your code was super well structured, I was able to add data-editing capabilities with minimal effort.

The only change I needed to make to your code is adding signal selection_changed to dataview_content.gd and in the _on_left_click function I added selection_changed.emit(_header_titles, data_provider._get_row(cell.y), cell.x)

Personally I used this to create a side_panel with LineEdits and OptionButtons and stuff which were specific to the structure of my database, but it can also be used to implement

Anyway, just wanted to share, and say thanks for making such a great addon

[rossunger]

I haven't considered multi-row editing yet, but I think that would be a fairly simple modification to emit multiple rows instead of a single row