Encoding error when importing firstname and name from system (`nimble init`).
```
nimble init       
      Info: In order to initialise a new Nimble package, I will need to ask you
        ... some questions. Default values are shown in square brackets, press
        ... enter to use them.
      Using "test_webview" for new package name
      Using "Ga\xC3\xABtan Andr\xC3\xA9" for new package author
      Using "src" for new package source directory
```
The created nimble file has the same issue.