Create shared / fast track for certain packages

pkgbuilds/shared/spotify/spotify.protocol

@@ -0,0 +1,11 @@
+[Protocol]
+exec=/usr/bin/spotify -uri "%u"
+protocol=spotify
+input=none
+output=none
+helper=true
+listing=false
+reading=false
+writing=false
+makedir=false
+deleting=false