feat: implemented basic belief-from-text extractor

The communication with other agents has been tested with mock data as the other agents (transcriber and belief collector) are not yet implemented.

ref: N25B-208

src/control_backend/agents/bdi/text_extractor.py

@@ -0,0 +1,10 @@
+import spade
+from spade.agent import Agent
+import logging
+
+from control_backend.agents.bdi.behaviours.text_belief_extractor import BeliefFromText
+
+class TBeliefExtractor(Agent):
+    async def setup(self):
+        self.b = BeliefFromText()
+        self.add_behaviour(self.b)