Chore/sso pages #166

> I'm in the core Team of inlang ## Fix inlang's configuration file We changed the `project.inlang.json` to a `settings.json` in a `project.inlang` dir. This enables the inlang project to store app information or metadata in a dir that is not relevant to you as an end user. #### Old ```tree ├── project.inlang.json ``` #### New ```tree ├── project.inlang │ ├── settings.json ```