added insect provider

FrontEnd/lib/providers/insect_provider.dart

+import 'package:flutter/material.dart';
+import 'package:govimithura/models/error_model.dart';
+import 'package:govimithura/models/insect_model.dart';
+import 'package:govimithura/services/insect_service.dart';
+import 'package:govimithura/utils/utils.dart';
+
+class InsectProvider extends ChangeNotifier {
+  InsectModel selectedInsect = InsectModel();
+
+  Future<void> getInsectById(BuildContext context) async {
+    await InsectService.getInsectById(selectedInsect.id).then((value) {
+      if (value != null) {
+        selectedInsect = InsectModel.fromJson(value.data()!);
+        notifyListeners();
+      } else {
+        Utils.showSnackBar(context, ErrorModel.errorMessage);
+      }
+    });
+  }
+
+  void setSelectedInsect(InsectModel insect) {
+    selectedInsect = insect;
+    notifyListeners();
+  }
+
+  void setSelectedInsectId(int id) {
+    selectedInsect.id = id;
+    notifyListeners();
+  }
+}