(doc): add workflow diagram

Author: yashksaini-coder

README.md

@@ -82,6 +82,15 @@ You can test the API using Postman or any other API testing tool. The following
     </tr>
 </table>
 
+### Workflow:
+
+<img src="./public/workflow.png" alt="Workflow" width="100%" align="center"/>
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 <a href="https://github.com/yashksaini-coder">