Support for placing JavaScript precisely before </body> tag

Caroline wants to integrate a Maia Mechanics widget that requires a JavaScript script and an API key. The widget's documentation might require the script to be placed precisely before the closing tag. CrocoClick currently offers 'Code de suivi de l’en-tête' and 'Code de suivi du corps' sections, but it's unclear if the 'Code de suivi du corps' section behaves exactly as 'just before ' for generic JavaScript widgets. Caroline needs this functionality to ensure her Maia Mechanics widget works correctly for calculating human design charts for her clients.