Release version 0.1.0

This is the first working version which is fully compatible with the
NSWRMs in the Schoeps case study.
The following features are implemented:
- preparation of the input file which defines management related
  scenarios based on SWATfarmR objects.
- generating a measr project which is an R6 object with included
  methods. This will be useful when loaded in the optimization.
- loading NSWRM definitions now works for land_use, management,
  and pond type NSWRMs.
- writing the input files into the project
- resetting input files.