Make magnansis a feature for examples

examples/custom_assets.rs

@@ -1,5 +1,11 @@
 use dioxus::prelude::*;
 
+#[cfg(not(feature = "collect-assets"))]
+static ASSET_PATH: &str = "examples/assets/logo.png";
+
+#[cfg(feature = "collect-assets")]
+static ASSET_PATH: &str = manganis::mg!(image("examples/assets/logo.png").format(ImageType::Avif));
+
 fn main() {
     launch_desktop(app);
 }
@@ -7,10 +13,8 @@ fn main() {
 fn app() -> Element {
     rsx! {
         div {
-            p {
-                "This should show an image:"
-            }
-            img { src: manganis::mg!(image("examples/assets/logo.png").format(ImageType::Avif)).to_string() }
+            p { "This should show an image:" }
+            img { src: ASSET_PATH.to_string() }
         }
     }
 }