Update ActionButton component docs (fill in template)

I have added index files with a component template for the component.
Fill in the template with the requested information (follow the instructions in the template).

Ask @thestokkan if you have questions about how to use the template.

Start with the index files and the component template mentioned in the issue, following the template's instructions for the requested information. The work is done when the ActionButton component documentation template is fully filled in; ask @thestokkan if questions about using the template remain.

Written by the indexing model from the issue text.