examples/ Directory Not Included in Installation, Causing gwsim config Commands to Fail
The `examples/` directory is currently not included in the installed package, meaning it is missing from the distribution built by uv build, pip installation, or PyPI artifacts.
As a result, the CLI commands that rely on discovering example configuration files do not work:
```shell
gwsim config --list
gwsim config --get <label>
```
These commands fail because the package cannot locate the examples/ directory at runtime.
issue