Add option to force language

[pe7er]

• [ ] Add "Language Selection for new Visitors" option to select to Site Language & Browser Settings just like Joomla's "System - Language Filter" plugin has:

  <select id="jform_params_detect_browser" name="jform[params][detect_browser]" style="display: none;">
  <option value="0" selected="selected">Site Language</option>
  <option value="1">Browser Settings</option>
  </select>

  And use that to force ?hl=lowercase-language-code

https://docs.hcaptcha.com/configuration