Missing function customModuleSupportUrl()

[hartenthaler]

If you look at the control panel you will see that your module does not show a link to the GitHub repository as other modules do. Please, add something like

    public const CUSTOM_MODULE         = 'webtrees-HTML-block-compact';
    public const CUSTOM_GITHUB_USER = 'photon-flip';
    public const CUSTOM_WEBSITE          = 'https://github.com/' . self::CUSTOM_GITHUB_USER . '/' . self::CUSTOM_MODULE . '/';

    /**
     * Where to get support for this module.  Perhaps a github respository?
     *
     * @return string
     */
    public function customModuleSupportUrl(): string
    {
        return self::CUSTOM_WEBSITE;
    }

[photon-flip]

Support URL added.