adata_to_lmd

[josenimo]

Enable users to export shapes based on analysis directly bypassing webapp.

if adata with single cells one could:

• export voronoi representations of the x,y points
• if connected with segmentation mask, export those

To be resolved:

• How do users pass on calibration points?
  Potential solutions:
• Use napari to select three points (needs images)
• Pass on Qupath geojson with points?
• (Easier to export wanted cells to geojson and qupath-to-lmd, also for visual-QC).

Definitely needed:

• geojson_to_xml (geojson_path, calibs:list=['calib1', 'calib2', 'calib3'], export_path, qc_path=False)
  To improve scalability