INFRA: Set Up Project.

lib/models/payment_model/pay_stack_model.dart

@@ -0,0 +1,30 @@
+class PayStackModel {
+  bool? isSandbox;
+  String? callbackURL;
+  String? publicKey;
+  String? secretKey;
+  bool? isEnable;
+  String? webhookURL;
+
+  PayStackModel({this.isSandbox, this.callbackURL, this.publicKey, this.secretKey, this.isEnable, this.webhookURL});
+
+  PayStackModel.fromJson(Map<String, dynamic> json) {
+    isSandbox = json['isSandbox'];
+    callbackURL = json['callbackURL'];
+    publicKey = json['publicKey'];
+    secretKey = json['secretKey'];
+    isEnable = json['isEnable'];
+    webhookURL = json['webhookURL'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = <String, dynamic>{};
+    data['isSandbox'] = isSandbox;
+    data['callbackURL'] = callbackURL;
+    data['publicKey'] = publicKey;
+    data['secretKey'] = secretKey;
+    data['isEnable'] = isEnable;
+    data['webhookURL'] = webhookURL;
+    return data;
+  }
+}