add clear command to completer

Author: ahmadnourallah

core/module_interpreter.py

@@ -27,7 +27,7 @@ def listCompleter(text,state):
 
             self.listCompleter = listCompleter
     t = tabCompleter()
-    t.createListCompleter(["set", "exploit", "back", "check", "help", "info", 'banner', 'run', 'exec'])
+    t.createListCompleter(["set", "exploit", "back", "check", "help", "info", 'banner', 'run', 'exec','clear'])
     readline.set_completer_delims('\t')
     readline.parse_and_bind("tab: complete")
     readline.set_completer(t.listCompleter)