README: add star history chart

Author: maazm7d

README.md

@@ -103,3 +103,5 @@
     />
   </a>
 </details>
+
+[![Star History Chart](https://api.star-history.com/svg?repos=maazm7d/TermuxHub&type=date&legend=top-left)](https://www.star-history.com/#star-history/star-history&type=date&legend=top-left)