deferred_loader: remove PhantomData using GATs

lib/rbx_loader/src/loader.rs

@@ -36,17 +36,17 @@ impl From<RobloxAssetIdParseErr> for TextureError{
 	}
 }
 
-pub struct TextureLoader<'a>(std::marker::PhantomData<&'a ()>);
-impl TextureLoader<'_>{
+pub struct TextureLoader;
+impl TextureLoader{
 	pub fn new()->Self{
-		Self(std::marker::PhantomData)
+		Self
 	}
 }
-impl<'a> Loader for TextureLoader<'a>{
+impl Loader for TextureLoader{
 	type Error=TextureError;
-	type Index=&'a str;
+	type Index<'a>=&'a str;
 	type Resource=Texture;
-	fn load(&mut self,index:Self::Index)->Result<Self::Resource,Self::Error>{
+	fn load<'a>(&mut self,index:Self::Index<'a>)->Result<Self::Resource,Self::Error>{
 		let RobloxAssetId(asset_id)=index.parse()?;
 		let file_name=format!("textures/{}.dds",asset_id);
 		let data=read_entire_file(file_name)?;
@@ -138,17 +138,17 @@ impl MeshIndex<'_>{
 	}
 }
 
-pub struct MeshLoader<'a>(std::marker::PhantomData<&'a ()>);
-impl MeshLoader<'_>{
+pub struct MeshLoader;
+impl MeshLoader{
 	pub fn new()->Self{
-		Self(std::marker::PhantomData)
+		Self
 	}
 }
-impl<'a> Loader for MeshLoader<'a>{
+impl Loader for MeshLoader{
 	type Error=MeshError;
-	type Index=MeshIndex<'a>;
+	type Index<'a>=MeshIndex<'a>;
 	type Resource=Mesh;
-	fn load(&mut self,index:Self::Index)->Result<Self::Resource,Self::Error>{
+	fn load<'a>(&mut self,index:Self::Index<'a>)->Result<Self::Resource,Self::Error>{
 		let mesh=match index.mesh_type{
 			MeshType::FileMesh=>{
 				let RobloxAssetId(asset_id)=index.content.parse()?;