Implement tawk.to widget

public/typo3conf/ext/ep_events/Configuration/TypoScript/Page/Main.typoscript

@@ -111,6 +111,22 @@ page {
         <!-- End Google Tag Manager -->
     )
     headerData.999.stdWrap.if.isTrue = {$plugin.tx_epevents.settings.googleTagManagerId}
+    headerData.9999 = TEXT
+    headerData.9999.value (
+    <!--Start of Tawk.to Script-->
+<script type="text/javascript">
+var Tawk_API=Tawk_API||{}, Tawk_LoadStart=new Date();
+(function(){
+var s1=document.createElement("script"),s0=document.getElementsByTagName("script")[0];
+s1.async=true;
+s1.src='https://embed.tawk.to/5cf8bd64b534676f32ad987f/default';
+s1.charset='UTF-8';
+s1.setAttribute('crossorigin','*');
+s0.parentNode.insertBefore(s1,s0);
+})();
+</script>
+<!--End of Tawk.to Script-->
+    )
 }
 
 [page["doktype"] == 101]