Write a sample to use local store instead of "certifi"

Write a sample in `sdk/core/azure-core/samples` on how to configure requests/aiohttp in code to use local store and not certifi.

I would imagine it's passing kwargs to the `RequestsTransport` and `AiohttpTransport`.

Interesting links:
- https://github.com/python/cpython/issues/72733
- https://pypi.org/project/truststore/ (code may be used for inspiration)