Add AGS to README.md #3371

Job	Run time
pyright (./packages/autogen-core)	1m 3s
pyright (./packages/autogen-magentic-one)	1m 7s
format	58s
pyright (./packages/agbench)	1m 2s
codecov (./packages/autogen-core)	58s
pyright (./packages/autogen-ext)	1m 6s
codecov (./packages/autogen-magentic-one)	1m 59s
lint	58s
pyright (./packages/autogen-agentchat)	53s
mypy (./packages/autogen-core)	2m 3s
codecov (./packages/autogen-ext)	2m 48s
pyright (./packages/magentic-one-cli)	1m 1s
mypy (./packages/autogen-magentic-one)	1m 5s
codecov (./packages/autogen-agentchat)	1m 18s
mypy (./packages/agbench)	1m 3s
mypy (./packages/autogen-ext)	1m 45s
test (./packages/autogen-core)	1m 5s
test (./packages/autogen-magentic-one)	1m 30s
test (./packages/autogen-ext)	2m 45s
mypy (./packages/autogen-agentchat)	1m 16s
test (./packages/autogen-agentchat)	1m 5s
mypy (./packages/magentic-one-cli)	1m 11s
check-proto-changes-python	1m 22s
docs (./packages/autogen-core)	1m 27s
docs-example-check (./packages/autogen-core)	2m 42s
markdown-code-lint	2m 12s
samples-code-check	1m 5s
	38m 47s

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