feat(anta.tests): add anta_test decorator

[gmuloc]

No description provided.

[titom73]

Looks good to me! It makes test function much easier to build

Need to be merged after a sprint to convert all existing tests to this new syntax

Also, we need to update documentation:

• Docstring for the decorator
• Markdown about how to build a test function.

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[gmuloc]

@titom73 / @mtache - this PR may be a bit black magic for users - the decorator is injecting the Result object and so you can call the test function without the TestResult argument.
It may be better to have the result object as an "optional" keyword argument injected by the decorator so it does not seem too voodoo.

or maybe another solution?

Thoughts ?

[github-actions]

Conflicts have been resolved. A maintainer will review the pull request shortly.

[mtache]

Ship it !