feat: added get_profile_url function to get the profile url in templates

This takes care of generating the correct profile URL depending on the
`profile_url_prefix` setting.

Issue #192

community/lms/web_form/profile/profile.js

@@ -8,7 +8,7 @@ frappe.ready(function () {
 
   frappe.web_form.after_save = () => {
     setTimeout(() => {
-      window.location.href = `/user/${frappe.web_form.get_value(["username"])}`;
+      window.location.href = `/profile_/${frappe.web_form.get_value(["username"])}`;
     })
   }
 })