Add Chess Opening Tool

[M0M097]

No description provided.

[M0M097]

Could it be there is bug in worker script here and it is assuming github to strongly? My appimage is hosted on gitlab and it seems that this is not supported by your script. I can not provide a github api url, since I am not using github. An easy fix on your side would simply be

if [  x"$GH_USER" == x"" ] ; then
-  GH_USER=$(grep "^https://api.github.com.*" data/$INPUTBASENAME | cut -d '/' -f 5 )
-  GH_REPO=$(grep "^https://api.github.com.*" data/$INPUTBASENAME | cut -d '/' -f 6 )
+  GH_USER=$(grep "^https://api.github.com.*" data/$INPUTBASENAME | cut -d '/' -f 5 ) || true
+  GH_REPO=$(grep "^https://api.github.com.*" data/$INPUTBASENAME | cut -d '/' -f 6 ) || true
fi