Expose a way to exclude deps

[sivel]

Note: This is based off of #645 right now

At the moment, this is only fully wired up for python deps, as it was kind of an experiment.

---
version: 3.1

images:
  base_image:
    name: quay.io/centos/centos:stream9

dependencies:
  python_interpreter:
    package_system: python3.11
    python_path: /usr/bin/python3.11

  ansible_core:
    package_pip: ansible-core

  ansible_runner:
    package_pip: ansible-runner

  galaxy:
    collections:
      - name: community.docker

  exclude:
    python:
      - docker

TODO:

• python excludes should work
• excludes should not apply to user deps
• system excludes should work
• should there be a means to exclude collections?

NOTES:

• Only supports exclusion of first level deps, does not offer a way to exclude deps of deps

[sivel]

Suggested change

	if pkg_name in exclude:
	if pkg_name in exclude and collection != 'user'::

[sivel]

Closing in favor of #663