Added explicit access modifiers

src/NCronJob/IJob.cs

@@ -10,5 +10,5 @@ public interface IJob
     /// </summary>
     /// <param name="context">The context of the job execution.</param>
     /// <param name="token">A cancellation token that can be used to cancel the job.</param>
-    Task RunAsync(IJobExecutionContext context, CancellationToken token);
+    public Task RunAsync(IJobExecutionContext context, CancellationToken token);
 }

src/NCronJob/IJobExecutionContext.cs

@@ -51,5 +51,5 @@ public interface IJobExecutionContext
     /// Calling <see cref="JobExecutionContext.SkipChildren"/> has no effects when no dependent jobs are defined
     /// via <see cref="INotificationStage{TJob}.ExecuteWhen"/>.
     /// </remarks>
-    void SkipChildren();
+    public void SkipChildren();
 }

src/NCronJob/IJobNotificationHandler.cs

@@ -15,7 +15,7 @@ public interface IJobNotificationHandler
     /// <remarks>
     /// The method will be invoked with the same scope as the job itself.
     /// </remarks>
-    Task HandleAsync(IJobExecutionContext context, Exception? exception, CancellationToken cancellationToken);
+    public Task HandleAsync(IJobExecutionContext context, Exception? exception, CancellationToken cancellationToken);
 }
 
 /// <summary>