Adding Google Tag Manager variables to intercomSettings

gtm-intercom.js

```
<script>
// app ID
var intercomSettings = {
	app_id: "{{IC - Dynamic app ID}}"
};

// Verifies and cleans all GTM variables
function pushGTMVariablesToIntercom(gtmKey, gtmValue) {
	if("{{User - Account - Type}}" != "Guest"){
		if(gtmValue != null && gtmValue != "" && gtmValue != "undefined") {
			if(typeof gtmValue == "string") {
				gtmValue = gtmValue.trim();
				if(gtmValue == "") {
					return false;
				}
			}
			intercomSettings[gtmKey] = gtmValue;
			return true;
		}
		return false;
	}
	return false;
}
function pushGTMObjectToIntercom(gtmKey, gtmValue) {
    if("{{User - Account - Type}}" != "Guest"){
        if(gtmValue != null && gtmValue != "undefined") {
            intercomSettings[gtmKey] = gtmValue;
            return true;
        }
        return false;
    }
    return false;
}

// Default variables
pushGTMVariablesToIntercom("user_id", "{{User - Account - ID}}");
pushGTMVariablesToIntercom("user_hash", "{{User - Account - Hash}}");
pushGTMVariablesToIntercom("email", "{{User - Account - Email}}");
pushGTMVariablesToIntercom("created_at", "{{User - Account - Registration date}}");
pushGTMVariablesToIntercom("name", "{{User - Account - First name}}" + " " + "{{User - Account - Last name}}");

// Custom variables example
pushGTMVariablesToIntercom("user_services", "{{User - Account - Services}}");
  
  
// Company data
pushGTMObjectToIntercom("company", { id: '{{User - Account - Company ID}}' , name: '{{User - Account - Company name}}' });

</script>

<script>(function() {var w = window;var ic = w.Intercom;if (typeof ic === "function") {ic('reattach_activator');ic('update', intercomSettings);} else {var d = document;var i = function() {i.c(arguments)};i.q = [];i.c = function(args) {i.q.push(args)};w.Intercom = i;var s = d.createElement('script');s.type = 'text/javascript';s.async = true;
	s.src = 'https://widget.intercom.io/widget/{{IC - Dynamic app ID}}';
	var x = d.getElementsByTagName('script')[0];x.parentNode.insertBefore(s, x);}})();
</script>
```