Create Form for Updating limit of Feature-Flag Rate Limiter

[MehulKChaudhari]

Issue Description

Create a form which only the super user can access. The form is basically to update the limit of the feature-flag rate limiter.

Expected Behavior

• Only superusers can view and interact with the form.
• Super users can modify and save the feature-flag rate limiter's limit successfully.
• Appropriate validation and feedback (e.g., success or error messages) should be displayed.
• Implement field validation for rate limits to prevent invalid entries. (Only number in limit field)

(Note: For now, the form should only be accessible through a dedicated route, such as /update-limit, or another clear and semantically appropriate URI that aligns with industry best practices.)

Current Behavior

The form to update the rate limit is built.