[feature] Add Codacy code quality report to README.md
[feature] Add Codacy code quality report to README.md

wolfgangmm/exist,hungerburg/exist,lcahlander/exist,ljo/exist,RemiKoutcherawy/exist,adamretter/exist,dizzzz/exist,ambs/exist,windauer/exist,RemiKoutcherawy/exist,ljo/exist,olvidalo/exist,dizzzz/exist,windauer/exist,wolfgangmm/exist,adamretter/exist,dizzzz/exist,RemiKoutcherawy/exist,ljo/exist,dizzzz/exist,windauer/exist,ambs/exist,olvidalo/exist,RemiKoutcherawy/exist,RemiKoutcherawy/exist,adamretter/exist,eXist-db/exist,adamretter/exist,opax/exist,ljo/exist,wolfgangmm/exist,lcahlander/exist,ambs/exist,eXist-db/exist,lcahlander/exist,hungerburg/exist,opax/exist,eXist-db/exist,olvidalo/exist,windauer/exist,lcahlander/exist,ambs/exist,hungerburg/exist,opax/exist,lcahlander/exist,olvidalo/exist,hungerburg/exist,eXist-db/exist,eXist-db/exist,lcahlander/exist,dizzzz/exist,ljo/exist,adamretter/exist,wolfgangmm/exist,ambs/exist,hungerburg/exist,opax/exist,opax/exist,windauer/exist,windauer/exist,dizzzz/exist,adamretter/exist,wolfgangmm/exist,RemiKoutcherawy/exist,eXist-db/exist,ambs/exist,wolfgangmm/exist,ljo/exist,olvidalo/exist