Deepdespeckling

- documentation workflow automatically updates and deploys documentation each time a push is done on main branch
- Sentinel-TOPS model is now available in merlin denoiser

- `MerlinDenoiser` is now initialised with `model_name` and `symetrise` parameters
- `MerlinDenoiser` and `Sar2SarDenoiser` are now more independent
- a `symetrise` parameter is added to make the symetrisation of images optional (when using MERLIN)

v2
In this release of deepdespeckling, 2 main implementations are done :

- SAR2SAR method is enabled for despeckling coSAR images
- A global refactoring is done in order to make the code cleaner, documented and well structured