Added script and data for PRC-complexes set

projects/PRC-complexes/README.md

projects/PRC-complexes/minimal_example/Annotations.csv

projects/PRC-complexes/minimal_example/Annotations.json

.../PRC-complexes/minimal_example/Config_Files/config_1.json

.../PRC-complexes/minimal_example/Config_Files/config_2.json

...omplexes/minimal_example/Zip_Files/692-Ubiquitin_SKP1.zip

...complexes/minimal_example_modelcif/692-Ubiquitin_SKP1.cif

...complexes/minimal_example_modelcif/692-Ubiquitin_SKP1.zip

projects/PRC-complexes/minimal_example_modelcif/issues.json

projects/PRC-complexes/translate2modelcif.py