Add SMB file source implementation and template

[bernt-matthias]

Thanks to opencode + blablador.

I have manually tested upload from a SMB server in my network. Could try to work on (let work on) adding tests (but we would need to spin up a SMB instance in tests).

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[bernt-matthias]

During experimenting I stumbled over the following error (probably due to a misconfiguration)

smbprotocol.exceptions.SMBAuthenticationError: Failed to authenticate with server: SpnegoError (1): SpnegoError (16): Operation not supported or available, Context: No username or password was specified and the credential cache did not exist or contained no credentials, Context: Unable to negotiate common mechanism

But it made me think what this credential cache is ... if smbprotocol has such a thing, then we maybe/probably want to disable it.

[bernt-matthias]

fsspec/filesystem_spec#2006