chore: Add components overview page

[at-susie]

Description

This PR adds components overview page including components that are imported from:

• @cloudscape-design/chat-components
• @cloudscape-design/board-components
• @cloudscape-design/code-view

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.52%. Comparing base (82d11d6) to head (ff30160).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4641   +/-   ##
=======================================
  Coverage   97.52%   97.52%           
=======================================
  Files         948      948           
  Lines       30363    30363           
  Branches    11077    11077           
=======================================
  Hits        29610    29610           
  Misses        706      706           
  Partials       47       47           

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