Create new requirements file to run abilities only if agent paw exists

app/requirements/check_registered.py

@@ -0,0 +1,23 @@
+from plugins.stockpile.app.requirements.base_requirement import BaseRequirement
+
+
+class Requirement(BaseRequirement):
+
+    async def enforce(self, link, operation):
+        """
+        Given a link and the current operation, ensure will only run if the agent with the given ID/PAW is alive.
+        
+        :param link
+        :param operation
+        :return: True if it complies, False if it doesn't
+        """
+        print("\n\n*********************\nin check_registered.py")
+        agent_paws = [agent.paw for agent in await operation.active_agents()]
+        for uf in link.used:
+            print("id: ", uf.value ,"   agent_paws:", agent_paws)
+            if uf.value in agent_paws:
+                print("returning true - run this ability")
+                return True
+        print("returning false - don't run this ability")
+        return False
+