New Container: fake-gcs-server

[amotl]

What is the new container you'd like to have?

A testcontainer that wraps the OCI image of fake-gcs-server with Python, like it exists for Java, Go, and .NET already.

Why not just use a generic container for this?

fake-gcs-server exists in testcontainers for other languages, and AzuriteContainer is also part of the Python distribution.

Other references:

• Filesystem: Integration tests for remote filesystems panodata/omniload#247
• https://github.com/panodata/omniload/pulls/249