decouple logo and icon

test_template/main.typ

@@ -8,8 +8,11 @@
 
 #show: webpage.with(
   "http://test.example.com",
-  "https://jean-marie.mineau.eu/website_assets/platypus.png",
-  "A drawing of a blue-ish round-ish platypus with big eyes, holding a laptop. This platypus is quite cute, but I might be biased.",
+  logo: image(
+    "./platypus.png", 
+    alt: "A drawing of a blue-ish round-ish platypus with big eyes, holding a laptop. This platypus is quite cute, but I might be biased.",
+    height: 100pt,
+  ),
   header: [
     = Test TeTyTe
     Hello World!
@@ -27,6 +30,7 @@
     - #link("example.com")[War]
   ],
   site-name: "TTT",
+  icon: "https://jean-marie.mineau.eu/website_assets/platypus.png",
 )