Making a new tab like the "2D" or "3D" tab using a custom plugin

Godot Version

v4.3.stable.official

Question

I am making a custom dialogue creator plugin for me to use. The creator that I want to make is similar to GameMaker Studio 2’s GML Visual or RPG in a Box’s Dialogue Editor. But I don’t know how to make the tab or scene like the “2D” tab at the top center of the editor. Also, it shouldn’t select and open the panels, text edit, or button in the Inspector.

image
It should be visible here or on the right of the “AssetLib” tab.

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