feat: image upload hint text

[plohan]

Why did you create this PR

Default image label text does not provide information developer want to convey to user. Adding customizable hint text make this process easier.

What did you do

This pull request introduces a new hintText property for media upload fields, allowing for more customizable and informative hints in the user interface. The change propagates this property from the backend field definition through to the frontend components, ensuring that users see context-relevant hints (such as suggested image ratios) when uploading files.

• Added an optional hintText property to the FieldColumnStringMediaOptions interface, enabling backend specification of custom hints for media fields.
• Updated the user collection definition to include a suggested image ratio hint for the image field (users.ts).

Screenshots / Recordings

The screenshot taken by enable user create page because only user has media field.

Checklist

• Self-reviewed your code
• Wrote coverage tests
• Added screenshots or recordings if applicable

[changeset-bot]

🦋 Changeset detected

Latest commit: af6664c

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

This PR includes changesets to release 8 packages

Name	Type
@genseki/react	Patch
@example/erp	Patch
@example/ui-playground	Patch
@genseki/next	Patch
@genseki/plugins	Patch
@genseki/prisma-generator	Patch
@genseki/react-query	Patch
@genseki/rest	Patch

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