feat: add package creator

rust/src/model/local.rs

@@ -6,10 +6,11 @@ use super::misc::Game;
 
 // manifest.json
 
-#[derive(Deserialize)]
+#[derive(Serialize, Deserialize)]
 pub struct PackageManifest {
     pub name: String,
     pub version_number: String,
+    pub website_url: String,
     pub description: String,
     pub dependencies: BTreeSet<PkgKeyVersion>,