Adding ads1x15 (ads1015-ads1115) adc driver

[nabilelmahiri]

Hello Ultibo team, After working on a driver for ads1015-ads1115 modules, i finally had the chance to share it with you so can review it and integrate it to the main branch.

main discutions on Utlibo Forum : https://ultibo.org/forum/viewtopic.php?f=10&t=1794

Thanks in advance