[FEATURE] Avatar link with tooltip #49

Implement a BitAvatar component inspired by the design and UX of the Bootstrap Italia Avatar component with support of Tooltips.

Requirements:

Describe the list of requirements this feature needs:

• Extend the BitAvatar component adding support for (docs).
• Expose properties for tooltip content.
• Expose parameters for ARIA/accessibility attributes.
• Ensure full accessibility including keyboard navigation, ARIA attributes, and screen reader support.
• Responsive design and mobile-friendly behavior.
• Requires [FEATURE] Add avatar component #46 , [FEATURE] Add the Tooltip & Popover components #9

Acceptance Criteria:

• The component renders valid Bootstrap Italia avatar markup.
• All documented variants and styles are supported via parameters.
• The component is unit tested for all major styles.
• Usage examples are provided in the documentation or a sample page.

References

• Bootstrap Italia - Avatars with tooltip documentation (docs)