add documentation and new config files

README.md

code/classes_def.py

code/config_1.json

code/config_1_fanny.json

code/config_global_1.json

code/config_global_2.json

code/config_global_3.json

code/discut22_1.py

global_config_file_guideline.md

model/config_training_bert.jsonnet