feat: Introduce ManagedAgent and AgentRunner implementations #400

Job	Run time
server-ai-windows (3.10)	47s
server-ai-windows (3.13)	28s
server-ai-openai-windows (3.12)	27s
server-ai-linux (3.13)	16s
server-ai-openai-windows (3.10)	26s
server-ai-linux (3.10)	17s
server-ai-linux (3.12)	15s
server-ai-openai-linux (3.13)	22s
server-ai-windows (3.11)	29s
server-ai-openai-windows (3.11)	22s
server-ai-openai-linux (3.11)	25s
server-ai-windows (3.12)	35s
server-ai-langchain-linux (3.11)	20s
server-ai-openai-windows (3.13)	21s
server-ai-langchain-windows (3.13)	22s
server-ai-optimization-linux (3.10)	10s
server-ai-openai-linux (3.12)	18s
server-ai-optimization-linux (3.12)	13s
server-ai-linux (3.11)	18s
server-ai-openai-linux (3.10)	22s
server-ai-langchain-windows (3.11)	26s
server-ai-langchain-windows (3.12)	27s
server-ai-optimization-linux (3.11)	10s
server-ai-optimization-windows (3.11)	20s
server-ai-optimization-windows (3.13)	26s
server-ai-langchain-linux (3.10)	19s
server-ai-langchain-windows (3.10)	21s
server-ai-langchain-linux (3.12)	21s
server-ai-optimization-windows (3.10)	19s
server-ai-optimization-linux (3.13)	18s
server-ai-optimization-windows (3.12)	18s
server-ai-langchain-linux (3.13)	24s
	11m 42s

Provide feedback