save created layers in Q4TS geopackage
closes #135 (closed)
- add method to get current or create current Q4TS geopackage :
get_or_create_q4ts_gpkg
- when creating layer in Q4TS GUI, add layer in current Q4TS geopackage
- use temporary layer and add it in Q4TS geopackage when creating contour from mesh
Edited by Jean-Marie Kerloch