refactor: improve logging and module structure

Changed some folders to not be modules and organized some `__init__.py`
files.

ref: N25B-223

src/control_backend/agents/bdi/text_extractor.py

@@ -1,9 +1,8 @@
 from spade.agent import Agent
 
-from control_backend.agents.bdi.behaviours.text_belief_extractor import BeliefFromText
+from .behaviours.text_belief_extractor import BeliefFromText
 
 
-class TBeliefExtractor(Agent):
+class TBeliefExtractorAgent(Agent):
     async def setup(self):
-        self.b = BeliefFromText()
-        self.add_behaviour(self.b)
+        self.add_behaviour(BeliefFromText())