feat: implement packagequeue

manifest/src/build.rs

@@ -8,3 +8,13 @@ pub struct Build {
     pub install_script: String,
     pub dependencies: HashMap<String, String>,
 }
+
+impl Default for Build {
+    fn default() -> Self {
+        Build {
+            dependencies: HashMap::default(),
+            build_script: String::default(),
+            install_script: String::default()
+        }
+    }
+}