Use caching to run tests and report coverage #3586

Job	Run time
format	49s
docs-example-check (./packages/autogen-core)	2m 45s
lint	52s
mypy (./packages/autogen-core)	2m 26s
mypy (./packages/autogen-magentic-one)	1m 27s
mypy (./packages/agbench)	55s
mypy (./packages/autogen-ext)	2m 10s
check-proto-changes-python	1m 27s
mypy (./packages/autogen-agentchat)	1m 24s
mypy (./packages/magentic-one-cli)	1m 31s
docs (./packages/autogen-core)	1m 30s
markdown-code-lint	2m 38s
pyright (./packages/autogen-core)	55s
samples-code-check	59s
pyright (./packages/autogen-magentic-one)	1m 13s
pyright (./packages/agbench)	1m 1s
pyright (./packages/autogen-ext)	1m 7s
test (./packages/autogen-core)	1m 0s
pyright (./packages/autogen-agentchat)	1m 4s
test (./packages/autogen-magentic-one)	1m 48s
pyright (./packages/magentic-one-cli)	1m 20s
test (./packages/autogen-ext)	49m 21s
test (./packages/autogen-agentchat)	1m 7s
codecov	0s
	1h 20m 49s

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