Function run 

pub fn run(
    source: &str,
    app_name: Option<String>,
    yes: bool,
    plugin_manager: Option<&PluginManager>,
) -> Result<(), Error>

Runs the app creation process.

This involves resolving the package, building it as an app template, and then installing it to the target directory.

Errors

Returns an error if:

• The package cannot be resolved.
• The package type is not ‘app’.
• The build process fails.
• The installation to the target directory fails.