Restore manganis optimizations (#3195)

* Create a crate for constant serialization of config structs for manganis
* use SerializeConst for the image asset builder
* switch to a declarative macro for assets
* add serializable options for each asset type
* implement the new manganis macro
* optimize assets in the CLI
* Fix assets with dioxus formattable
* reduce fuzzing test limits
* use the new syntax in examples
* fix avif support
* Fix manganis doc tests
* cache asset optimization
* Split out asset and bundled asset
* make hash pointer width independent
* Fix manganis macro docs
* add constvec::is_empty method to fix clippy lint
* remove nasm feature
* simplify test_rsplit_once test so typos passes
* revert example change from clippy fix
* always accept unix paths
* fix windows path seperator
* fix folder asset hash
* Optimize assets in a blocking task
* Fix asset options docs
* Document Asset and BundledAsset
* simplify the linker macro a bit
* add more docs to AssetParser expansion
* add image format helpers
* Split by  both unix and windows path separators and take the smallest one

packages/const-serialize/tests/str.rs

@@ -0,0 +1,40 @@
+use const_serialize::{deserialize_const, serialize_const, ConstStr, ConstVec};
+
+#[test]
+fn test_serialize_const_layout_str() {
+    let mut buf = ConstVec::new();
+    let str = ConstStr::new("hello");
+    buf = serialize_const(&str, buf);
+    println!("{:?}", buf.as_ref());
+    let buf = buf.read();
+    assert_eq!(
+        deserialize_const!(ConstStr, buf).unwrap().1.as_str(),
+        "hello"
+    );
+}
+
+#[test]
+fn test_serialize_const_layout_nested_str() {
+    let mut buf = ConstVec::new();
+    let str = ConstStr::new("hello");
+    buf = serialize_const(&[str, str, str] as &[ConstStr; 3], buf);
+    println!("{:?}", buf.as_ref());
+    let buf = buf.read();
+
+    assert_eq!(
+        deserialize_const!([ConstStr; 3], buf).unwrap().1,
+        [
+            ConstStr::new("hello"),
+            ConstStr::new("hello"),
+            ConstStr::new("hello")
+        ]
+    );
+}
+
+#[test]
+fn test_serialize_str_too_little_data() {
+    let mut buf = ConstVec::new();
+    buf = buf.push(1);
+    let buf = buf.read();
+    assert_eq!(deserialize_const!(ConstStr, buf), None);
+}