Remove 'Fritz' from the project, namespace, and NuGet package names

- [x] Project Name renamed
- [x] Namespace renamed
- [ ] NuGet package renamed

The issue identifies the NuGet package name as the only remaining rename task, but it does not name the package metadata file or a test. Start by locating where the NuGet package is configured and verify that the generated package uses the new project name, with no remaining “Fritz” references in package-related metadata.

Scritto dal modello di indicizzazione a partire dal testo della issue.