Enhance app management with 'IsRecommended' feature

- Added 'IsRecommended' property to app-related data models, allowing apps to be marked as recommended.
- Updated API endpoints for creating and updating apps to include 'IsRecommended' in request bodies.
- Modified database schema to accommodate the new 'IsRecommended' field.
- Enhanced frontend components to display recommended apps with a star icon and updated forms to manage this property.
- Improved sorting logic in app listings to prioritize recommended apps.
- Updated documentation to reflect changes in API and data models.

backend/tests/PnvPanel.Application.Tests/Admin/Maintenance/DeleteDisabledAppsCommandHandlerTests.cs

@@ -18,7 +18,8 @@ public class DeleteDisabledAppsCommandHandlerTests
             OsPlatform.Android,
             null,
             null,
-            0
+            0,
+            isRecommended: false
         );
         disabledApp.Update(
             disabledApp.Name,
@@ -27,7 +28,8 @@ public class DeleteDisabledAppsCommandHandlerTests
             null,
             null,
             0,
-            isEnabled: false
+            isEnabled: false,
+            isRecommended: false
         );
 
         var enabledApp = ClientApp.Create(
@@ -36,7 +38,8 @@ public class DeleteDisabledAppsCommandHandlerTests
             OsPlatform.IOS,
             null,
             null,
-            0
+            0,
+            isRecommended: false
         );
 
         dbContext.ClientApps.AddRange(disabledApp, enabledApp);
@@ -65,7 +68,8 @@ public class DeleteDisabledAppsCommandHandlerTests
             OsPlatform.IOS,
             null,
             null,
-            0
+            0,
+            isRecommended: false
         );
         dbContext.ClientApps.Add(enabledApp);
         await dbContext.SaveChangesAsync(CancellationToken.None);