[ADD] docstrings in workers
[ADD] docstrings in workers

Endika/connector,mohamedhagag/connector,js-landoo/connector,zhaohuaw/connector,maljac/connector,MindAndGo/connector,esousy/connector,gurneyalex/connector,BT-jmichaud/connector,brain-tec/connector,gurneyalex/connector,acsone/connector,fevxie/connector,sylvain-garancher/connector,Antiun/connector,BT-ojossen/connector,zhaohuaw/connector,brain-tec/connector,MindAndGo/connector,open-synergy/connector,acsone/connector,Antiun/connector,BT-ojossen/connector,hugosantosred/connector,guewen/connector,BT-fgarbely/connector,esousy/connector,brain-tec/connector,anybox/connector,dvitme/connector,hugosantosred/connector,acsone/connector,mohamedhagag/connector,anybox/connector,guewen/connector,dvitme/connector,maljac/connector,open-synergy/connector,BT-fgarbely/connector,sylvain-garancher/connector,js-landoo/connector,fevxie/connector,BT-jmichaud/connector,Endika/connector