docs: add component spec skill

[joshblack]

Closes #

Changelog

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Changed

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Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

[github-actions]

⚠️ Action required

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[changeset-bot]

🦋 Changeset detected

Latest commit: 0e0abc7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@primer/react	Patch

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[primer]

🤖 Lint issues have been automatically fixed and committed to this PR.

[primer]

🤖 Lint issues have been automatically fixed and committed to this PR.

[primer]

🤖 Lint issues have been automatically fixed and committed to this PR.

[primer]

🤖 Lint issues have been automatically fixed and committed to this PR.