Review and ignore files added to project

Change-Id: I892eee41dd37eac7c1ac3ad7e92c9f04172d83e7
Added license and readme files

Change-Id: I0c39e85c5480e5e0a6b8f1a7d669840a55eb42ca
Initial webRtc utils implementation

Change-Id: I8cfdc322cc354373b4aa97939333cfe7cc6bcb58
Refactoring of WebRtcPeer according to initial design

Change-Id: I731264298e179c0c7cd78e639fea7c28378d75f6
Package version updated to release version
[maven-release-plugin] prepare release kws-utils-4.3.12