04f570a01f
As proposed in #98518, this moves all `View2D` files into a `source/blender/editors/inteface/view2d/` directory. This helps keeping the `interface/` directory clean. In general I think we should promote a more modular thinking, where coherent parts of the code form a module or sub-module. The directory structure and its files can reflect that nicely. Pull Request: https://projects.blender.org/blender/blender/pulls/132853