- Implementation of specialist execution api, including SSE protocol

- eveai_chat becomes deprecated and should be replaced with SSE
- Adaptation of STANDARD_RAG specialist
- Base class definition allowing to realise specialists with crewai framework
- Implementation of SPIN_SPECIALIST
- Implementation of test app for testing specialists (test_specialist_client). Also serves as an example for future SSE-based client
- Improvements to startup scripts to better handle and scale multiple connections
- Small improvements to the interaction forms and views
- Caching implementation improved and augmented with additional caches

config/agents/SPIN_SALES_SPECIALIST_AGENT/1.0.0.yaml

@@ -11,10 +11,10 @@ backstory: >
   decide on follow-up questions for more in-depth information to ensure we get the required information that may lead to
   selling {products}. 
   SPIN stands for:  
-  - Situation questions & information - Understanding the customer's current context
-  - Problem questions & information - Uncovering challenges and pain points
-  - Implication questions & information - Exploring consequences of those problems
-  - Need-payoff questions & information - Helping customers realize value of solutions
+  - Situation information - Understanding the customer's current context
+  - Problem information - Uncovering challenges and pain points
+  - Implication information - Exploring consequences of those problems
+  - Need-payoff information - Helping customers realize value of solutions
   {custom_backstory}
   You are acquainted with the following product information:
   {product_information}