feat(accordion): toggle via keyboard

[armoucar]

…& enter keys

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

Today an accordion is not accessible for keyboard navigation. This pull request allows the accordion component to expand or collapse using Space or Enter keys.

[yggg]

👍