Add Frontend Logic for Updating an Application Name

## Summary

We will be adding the ability to edit application names in #142 and we will need UI implemented to support this.
We shall add an additional field for editing and submitting a new application name to the application detail page in the Nuxt UI `developer-applications/[id]`

The UI change is for the Nuxt page at `developer-applications/[id]`. Look for the existing application detail page in the codebase to understand the current structure. You'll need to add an editable field and a submit button that calls the backend API endpoint created in issue #142. Check how other forms in the project handle API calls and state updates to follow the existing patterns.

Written by the indexing model from the issue text.