Add --labels option to filter configs at load time

[tdawson]

This adds the --labels option to the command line.

It accepts a comma-separated list of label IDs to process. If not specified, all labels are processed.
If an addon (Example: eln-extras) is listed, it makes sure that the base label/view is also added.
Only workloads, environments, views, and repos matching the specified labels will be analyzed.

Assisted-by: Claude noreply@anthropic.com

[yselkowitz]

According to CI, the test needs to be fixed.

[tdawson]

Interesting. I can do it manually and it tests just fine (./test_label_filtering.py) but I didn't test it with pytest.
I need to track down how it's getting "all_configs" when running it manually.

[tdawson]

I re-wrote the tests to be pytest tests, also added more.
I'm going to squash it into one commit.
I just wanted to double check before squashing it.

[yselkowitz]

Running a test now. So far the results seem okay, but the console output needs a tweak.

[tdawson]

Good catch. It was literally counting the same thing. We don't really need it since we already listed everything in the per-filtering summary.
I also wanted it to list the views. It makes me feel better knowing what views there are, especially if I only ilsted an add-on.

[yselkowitz]

LGTM, thanks!