feat: IMaaContext.IsCancellationRequested

Author: moomiji

src/MaaFramework.Binding.Native/MaaContext.cs

@@ -27,6 +27,9 @@ public MaaContext(MaaContextHandle contextHandle)
         Tasker = NativeBindingContext.IsStatelessMode ? new MaaTasker(taskerHandle) : MaaTasker.Instances[taskerHandle];
     }
 
+    /// <inheritdoc/>
+    public bool IsCancellationRequested => Tasker.IsStopping;
+
     /// <inheritdoc/>
     /// <remarks>
     ///     Wrapper of <see cref="MaaContextRunTask"/>.

src/MaaFramework.Binding/IMaaContext.cs

@@ -20,6 +20,12 @@ public interface IMaaContext<T> : IMaaContext
 /// </summary>
 public interface IMaaContext : ICloneable
 {
+    /// <summary>
+    ///     Gets whether cancellation has been requested for this context.
+    /// </summary>
+    /// <returns><see langword="true"/> if cancellation has been requested; otherwise, <see langword="false"/>.</returns>
+    bool IsCancellationRequested { get; }
+
     /// <summary>
     ///     Runs a task.
     /// </summary>