[Features] A utility function to allow `join` operations of two `GeoDataFrame`

[mxposed]

Is your feature request related to a problem? Please describe.
After segmenting and predicting cell types (with HistoPLUS, for instance), I see the results in slide['cell_types'] but it only has 3 columns: prob, class, geometry

Describe the solution you'd like
It would be great to add tile_id or tile_id, tissue_id to the cell_types table automatically during inference

Describe alternatives you've considered
Of course, I can compute the overlap with tile coordinates and find where each cell belongs

Submit a pull request

• Are you willing to submit a PR on this feature?

[Mr-Milk]

Hi @mxposed, thanks for the issue. What you propose make a lot of sense.
Actually, We can have a join_with parameter in io.load_annotations: https://lazyslide.readthedocs.io/en/latest/api/_autogen/lazyslide.io.load_annotations.html, which allow users to control if they want to add other tables with the loaded annotations in the same tables. This is exactly what you want but for cell segmentations. We can consider implement this feature for many other functions. Please let me know if you like this design.

[mxposed]

Yes, seems great, thanks