BasicAuth for PulsarTesRunner

[BorisYourich]

This PR implements basic authorisation functionality in job submission to TES server.
Job configuration is extended by following options:

      authorization: "basic"  # Can be "none" or "basic"
      basic_auth:
        username: "user"
        password: "password"

Following this approach the OAuth2 authorisation could be implemented, although it requires an implementation of underlying mechanism that would obtain and refresh service tokens from the configured authority.

This PR is dependent on PR#5 in pydantic-tes

[martenson]

@BorisYourich this CI error seems relevant:

py311-mypy: commands[0]> mypy pulsar test
pulsar/managers/util/tes.py:58: error: Argument "url" to "TesClient" has
incompatible type "Optional[Any]"; expected "str"  [arg-type]
        return TesClient(url=tes_url, headers=headers)
                             ^~~~~~~
Found 1 error in 1 file (checked 153 source files)
py311-mypy: exit 1 (28.30 seconds) /home/runner/work/pulsar/pulsar> mypy pulsar test pid=3198
  py311-mypy: FAIL code 1 (53.56=setup[[25](https://github.com/galaxyproject/pulsar/actions/runs/14380331051/job/40335724455?pr=391#step:6:26).26]+cmd[28.30] seconds)
  evaluation failed :( (53.76 seconds)
Error: Process completed with exit code 1.

[jmchilton]

I've been on a Pulsar hiatus but this PR looks great to me. Any chance you can rebase and see if it resolves the type error?

[jmchilton]

Thank you so much - sorry for the delays.