Adding Typescript and Mantine example

[triyanox]

Bug

• Related issues linked using fixes #number
• Integration tests added
• Errors have helpful link attached, see contributing.md

Feature

• Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
• Related issues linked using fixes #number
• Integration tests added
• Documentation added
• Telemetry added. In case of a feature if it's used or not.
• Errors have helpful link attached, see contributing.md

Documentation / Examples

• Make sure the linting passes by running yarn lint

[balazsorban44]

Thanks! I added some comments.

I think we can just call the folder with-mantine and drop -typescript, as we plan to only add TS examples whenever possible, as mentioned in https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples

[balazsorban44]

Thanks!

[triyanox]

I have made some changes to pass all the test including the failing linting test due to code formatting !