Request do add KONNEKTING library to lib-manager

[tuxedo0801]

This library enables you to create an arduino/esp8266 powered KNX device

Repo: https://github.com/KONNEKTING/KonnektingDeviceLibrary
Latest tag: https://github.com/KONNEKTING/KonnektingDeviceLibrary/releases/tag/1.0.0-BETA3

Thanks for adding.

[agdl]

Done thank you!