Function install_extracted 

pub fn install_extracted(
    base: &Path,
    eco: &Ecosystem,
    game: &str,
    profile_name: &str,
    full_name: &str,
    owner: &str,
    version: &Version,
    extracted_dir: &Path,
    archive: Option<&Path>,
    installed_at_time: u64,
) -> Result<()>

Installs an already-extracted package into an r2modman-layout profile (<base>/<game>/profiles/<profile_name>). See install_extracted_in.