display api stuff in frontend

frontend/lib/core/models/build.dart

@@ -0,0 +1,19 @@
+class Build {
+  final int id;
+  final String pkg_name;
+  final String version;
+  final int status;
+
+  Build(
+      {required this.id,required this.pkg_name, required this.version,
+        required this.status});
+
+  factory Build.fromJson(Map<String, dynamic> json) {
+    return Build(
+      id: json["id"] as int,
+      status: json["status"] as int,
+      pkg_name: json["pkg_name"] as String,
+      version: json["version"] as String,
+    );
+  }
+}

frontend/lib/core/models/package.dart

@@ -0,0 +1,21 @@
+class Package {
+  final int id;
+  final String name;
+  final int count;
+  final int status;
+
+  Package(
+      {required this.id,
+      required this.name,
+      required this.count,
+      required this.status});
+
+  factory Package.fromJson(Map<String, dynamic> json) {
+    return Package(
+      id: json["id"] as int,
+      count: json["count"] as int,
+      status: json["status"] as int,
+      name: json["name"] as String,
+    );
+  }
+}