Client Script to use Logged-in User Information (#1713)

* client script user info

* client side user information

Author: kmxo

Client-Side Components/Client Scripts/Get Logged in User Information/README.md

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+# The Glide User (g_user) is a global object available within the client side. It provides information about the logged-in  user.
+
+Property                   Description
+
+g_user.userID              Sys ID of the currently logged-in user
+g_user.name                User's Full name
+g_user.firstName           User's First name
+g_user.lastName            User's Last name
+
+# It also has some methods available within the client side.
+
+Method                     Description
+
+g_user.hasRole()           Determine whether the logged-in user has a specific role
+g_user.hasRoleExactly()    Do not consider the admin role while evaluating the method
+g_user.hasRoles()          You can pass two or more roles in a single method

Client-Side Components/Client Scripts/Get Logged in User Information/script.js

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+if (g_user.hasRole('admin') || g_user.hasRole('itil')) {
+    // User has at least one of the roles
+    g_form.setDisplay('internal_notes', true);
+}
+
+if (g_user.hasRole('admin') && g_user.hasRole('itil')) {
+    // User must have both roles
+    g_form.setDisplay('advanced_settings', true);
+}
+
+//Using the parameters to set a field value
+g_form.setValue('short_description', g_user.firstName);
+
+g_form.setValue('short_description', g_user.lastName);
+
+g_form.setValue('short_description', g_user.name);
+
+g_form.setValue('short_description', g_user.userID);