Updated sponsorship configurations (#282)

Author: Nusnus

.github/FUNDING.yml

@@ -1,4 +1,7 @@
 # These are supported funding model platforms
 
-github: celery
+github: nusnus
 open_collective: celery
+patreon: # Replace with a single Patreon username
+ko_fi: # Replace with a single Ko-fi username
+custom: # Replace with a single custom sponsorship URL