lua - add modules init to crossref filter

Author: cscheid

src/resources/filters/crossref/crossref.lua

@@ -14,6 +14,8 @@ end
 
 import("../mainstateinit.lua")
 
+import("./modules/import_all.lua")
+
 import("../ast/scopedwalk.lua")
 import("../ast/customnodes.lua")
 import("../ast/emulatedfilter.lua")