feat: Add User Info Bookmarklet snippet

Specialized Areas/Browser Bookmarklets/Show Logged-in User roles/readme.md

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+# ServiceNow User Info Bookmarklet
+
+A simple, client-side bookmarklet to display the current ServiceNow user's details in a pop-up modal. It's designed for developers, testers, and administrators who need to quickly check a user's name, sys_id, and full list of assigned roles
+
+## Features
+
+* **Displays Key User Info**: Shows Full Name, User Name, and User ID (sys_id)
+* **Shows All Roles**: Lists the complete, sorted array of roles, including inherited roles
+
+
+## How to Use
+
+1.  Create a new bookmark in your browser
+2.  For the name, enter something memorable like **SN User Info**
+3.  Copy the code from user_info_bookmarklet.js
+4.  Paste the code into the **URL** or **Address** field of the bookmark
+5.  Save the bookmark
+6.  While on any ServiceNow page, click the bookmark to activate the modal
+
+<img width="1899" height="761" alt="image" src="https://github.com/user-attachments/assets/6dd8e92a-f905-4516-b1be-61e32a4de35c" />
+