Add "starred parts" to home screen

lib/widget/starred_parts.dart

@@ -0,0 +1,92 @@
+
+
+import 'package:InvenTree/inventree/part.dart';
+import 'package:InvenTree/widget/part_detail.dart';
+import 'package:InvenTree/widget/progress.dart';
+import 'package:InvenTree/widget/refreshable_state.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+import '../api.dart';
+
+
+class StarredPartWidget extends StatefulWidget {
+
+  StarredPartWidget({Key key}) : super(key: key);
+
+  @override
+  _StarredPartState createState() => _StarredPartState();
+}
+
+
+class _StarredPartState extends RefreshableState<StarredPartWidget> {
+
+  List<InvenTreePart> starredParts = [];
+
+  @override
+  String getAppBarTitle(BuildContext context) => "Starred Parts";
+
+  @override
+  Future<void> request(BuildContext context) async {
+
+    final parts = await InvenTreePart().list(context, filters: {"starred": "true"});
+
+    starredParts.clear();
+
+    for (int idx = 0; idx < parts.length; idx++) {
+      if (parts[idx] is InvenTreePart) {
+        starredParts.add(parts[idx]);
+      }
+    }
+  }
+
+  Widget _partResult(BuildContext context, int index) {
+    final part = starredParts[index];
+
+    return ListTile(
+        title: Text(part.fullname),
+        subtitle: Text(part.description),
+        leading: InvenTreeAPI().getImage(
+            part.thumbnail,
+            width: 40,
+            height: 40
+        ),
+        onTap: () {
+          InvenTreePart().get(context, part.pk).then((var prt) {
+            if (prt is InvenTreePart) {
+              Navigator.push(
+                  context,
+                  MaterialPageRoute(builder: (context) => PartDetailWidget(prt))
+              );
+            }
+          });
+        }
+    );
+  }
+
+  @override
+  Widget getBody(BuildContext context) {
+
+    if (loading) {
+      return progressIndicator();
+    }
+
+    if (starredParts.length == 0) {
+      return ListView(
+        children: [
+          ListTile(
+            title: Text("No Parts"),
+            subtitle: Text("No starred parts available")
+          )
+        ],
+      );
+    }
+
+    return ListView.separated(
+      itemCount: starredParts.length,
+      itemBuilder: _partResult,
+      separatorBuilder: (_, __) => const Divider(height: 3),
+      physics: ClampingScrollPhysics(),
+    );
+  }
+}