Add AppSnackBarsBuildContextExtension for displaying success and failure snack bars in the app.

lib/utils/extension/app_snack_bar.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:syncrow_web/utils/color_manager.dart';
+import 'package:syncrow_web/utils/extension/build_context_x.dart';
+
+extension AppSnackBarsBuildContextExtension on BuildContext {
+  void showSuccessSnackbar(String message) {
+    ScaffoldMessenger.of(this).showSnackBar(
+      _makeSnackbar(
+        message: message,
+        icon: Icons.check_circle,
+        backgroundColor: Colors.green,
+      ),
+    );
+  }
+
+  void showFailureSnackbar(String message) {
+    ScaffoldMessenger.of(this).showSnackBar(
+      _makeSnackbar(
+        message: message,
+        icon: Icons.error,
+        backgroundColor: Colors.red,
+      ),
+    );
+  }
+
+  SnackBar _makeSnackbar({
+    required String message,
+    required Color backgroundColor,
+    required IconData icon,
+  }) {
+    return SnackBar(
+      content: Row(
+        mainAxisSize: MainAxisSize.min,
+        spacing: 8,
+        children: [
+          Icon(icon, color: Colors.white),
+          Text(
+            message,
+            style: textTheme.bodyMedium?.copyWith(
+              color: ColorsManager.whiteColors,
+            ),
+          ),
+        ],
+      ),
+      backgroundColor: backgroundColor,
+      behavior: SnackBarBehavior.floating,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12.0),
+      ),
+      margin: const EdgeInsetsDirectional.symmetric(
+        horizontal: 92,
+        vertical: 32,
+      ),
+    );
+  }
+}