feat: Avatar

[cansuaa]

Description

New avatar component

Related links, issue #, if available: n/a

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

Attention: Patch coverage is 98.46154% with 2 lines in your changes missing coverage. Please review.

Project coverage is 96.88%. Comparing base (af25460) to head (19a380d).
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/avatar/internal.tsx	97.95%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
+ Coverage   96.77%   96.88%   +0.10%     
==========================================
  Files          12       16       +4     
  Lines         217      385     +168     
  Branches       18       51      +33     
==========================================
+ Hits          210      373     +163     
- Misses          7       11       +4     
- Partials        0        1       +1     

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