Merging last stuff for v0.0.4
Changelog:
- Reward shaping to penalize N use
- Some seed fixes
- Add user_input arg in tests
- Add test coverage stuff
- Improve run_env.py to extend coverage -> Now an additional file is used: test_files/GAGR.CLI
- Add symbolic link to samples DIR: /opt/gym_dssat_pdi/samples
- Add environment variable to venv bin/activate: GYM_DSSAT_PDI_PATH GYM_DSSAT_PDI_PATH=/opt/gym_dssat_pdi/lib/${PYTHON_VERSION}/site-packages/gym_dssat_pdi
- Fix numpy version in venv to 1.21.4