Significant updates to agbench. #4166

Job	Run time
lint	53s
format	55s
mypy (./packages/autogen-core)	1m 26s
mypy (./packages/agbench)	1m 6s
pyright (./packages/autogen-core)	59s
pyright (./packages/agbench)	1m 4s
mypy (./packages/autogen-ext)	1m 24s
mypy (./packages/autogen-agentchat)	1m 24s
pyright (./packages/autogen-ext)	1m 4s
docs (./packages/autogen-core)	1m 46s
pyright (./packages/autogen-agentchat)	58s
docs-example-check (./packages/autogen-core)	3m 3s
mypy (./packages/magentic-one-cli)	1m 26s
pyright (./packages/magentic-one-cli)	56s
markdown-code-lint	2m 35s
samples-code-check	57s
test (./packages/autogen-core)	1m 10s
test (./packages/autogen-ext)	4m 35s
test (./packages/autogen-agentchat)	1m 7s
check-proto-changes-python	1m 29s
codecov (./packages/autogen-core)	9s
codecov (./packages/autogen-ext)	7s
codecov (./packages/autogen-agentchat)	12s
	30m 45s

Provide feedback