[feature request]: Allow aria-label to suppress template-accessibility-alt-text violation

I am facing a use case where I do not want to specify an empty or non-empty alt text on an image element. However, I still want to provide an aria-label for assistive technologies.

Would it be possible for `template-accessibility-alt-text` to consider `aria-label` to be an acceptable alternative (either by default or as a rule option)?

Start by locating the implementation and tests for the template-accessibility-alt-text rule. Check how image alt text is currently validated, then define the expected behavior for aria-label and verify that the rule accepts it without weakening other accessibility checks.

Written by the indexing model from the issue text.