Coffee Warehouse Nextjs app with Next 15 RC

[WissamProgress]

• [X] Test with Next 15 and React 19
• [X] Test with react compiler
• [X] Test with the turbopack option
• [X] Fix issues (styling from rendering changes, babel config, ...)

I needed to comment out the PDF Export for the Grid due to an error related to this GitHub issue - https://github.com/telerik/kendo-react/issues/2286

There is currently a conflict between react rc and next rc which requires using --force. When the official versions are released, we can merge this PR.

Related to https://github.com/telerik/kendo-react-private/issues/4025

[WissamProgress]

This PR can be merged after the official release of version 15. In the meantime, it will be converted to a draft.