Add download section to README (#305)

* Add download section to README

Added download section with links and images for AltSource and StikDebug.

* Update download link in README.md

Author: CelloSerenity

README.md

@@ -23,6 +23,16 @@
   <br />
 </h6>
 
+# Download
+<div align="center" style="display: flex; justify-content: center; align-items: center; gap: 16px; flex-wrap: wrap;">
+   <a href="https://celloserenity.github.io/altdirect/?url=https://stikdebug.xyz/index.json" target="_blank">
+  <img src="https://github.com/CelloSerenity/altdirect/blob/main/assets/png/AltSource_Blue.png?raw=true" alt="Add AltSource" width="200">
+   </a>
+   <a href="https://github.com/StephenDev0/StikDebug/releases/download/2.3.6/StikDebug-2.3.6.ipa" target="_blank">
+  <img src="https://github.com/CelloSerenity/altdirect/blob/main/assets/png/Download_Blue.png?raw=true" alt="Download .ipa" width="200">
+   </a>
+</div>
+
 ## Code Help
 [![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/stephendev0/stikdebug)