Support multiple sources of input files
At that time, input files are either expected on the disk, or fetched through the accompanying
peps_download.py script. Other sources shall be supported.
The chosen approach is to use eodag.
- Change current fetching method to eodag
- Adapt S1Tiling configuration method
- Document the new configuration
- Document the new dependency
- Introduce the dependency in S1Tiling installation procedures (pip, conda)