Using new widgets in PhAB

I have developed a new widget that I want to use in PhAB. I have read in
Photon 1.14 documentation how to do it, but is this true for Photon 2.0?
In Photon’s 1.14 documentation QSSL talks about *.wgtp and *.pal files, but
in my QNX RTP PhAB there are only 3 *.wgtp files, so I suppose that QSSL has
changed that part of PhAB.

Inside the folder of “AppBuilder” I have found a folder “Templates” with
“NAME.img” files. Where “NAME” is tha name of Photon Widgets. What are this
*.img files?