Added new banner

Author: lpeyr

.github/images/banner.png

@@ -29,7 +29,14 @@
 
 ## Introduction
 
-![Banner](.github/images/banner.png)
+
+<picture>
+  <source srcset=".github/images/banner2.png" media="(prefers-color-scheme: dark)"          />
+    <img
+      src=".github/images/banner.png"
+      alt="Banner"
+    />
+</picture>
 
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