add nexus repo (xbmc#2060)

Co-authored-by: ronie <ronie@kodi.tv>

Author: ronie

targets.cfg

@@ -84,3 +84,12 @@ minversions =
  xbmc.json:6.0.0,
  xbmc.metadata:1.0,
  xbmc.addon:12.0.0
+
+[nexus]
+branches = gotham,helix,isengard,jarvis,krypton,leia,matrix,nexus
+minversions =
+ xbmc.gui:5.15.0,
+ xbmc.python:3.0.0,
+ xbmc.json:6.0.0,
+ xbmc.metadata:1.0,
+ xbmc.addon:12.0.0