Version 1.6 - Automatic test and pixi file. With GEFF IO, start interface, pixi fixed

Added the option to import/export to TrackMate and GEFF format.
THe starting interface is now split in two steps: loaded raw movie then choice of metadata and type of segmentation, to make it clearer and integrate import from GEFF.
Pixi should be fixed for when cmake is not installed in the system.

What's Changed

• Add automatic tests by @gletort in #14
• Add GEFF import/export optins by @lxenard in #15, #16

Full Changelog: 1.5.3...v1.6

Version 1.5.3 - Broader compatibility

EpiCure release with broader python compability: epyseg dependency is now handled through Appose, so EpiCure is not limited anymore to 3.10. Napari versions can also be greater (until 0.7.0 the current version) and EpiCure can be installed from the bundled app version.
Export/Import to TrackMate handled directly in EpiCure.
Small bugs fixes
Temporal plots for pyside2 are in browser