Add 'From' methods and mark 'Get' methods as obsolete

Added 'From' and 'From<T>' methods to the 'OutputProxy' class, which retrieve the value of a specified output from a certain activity. The pre-existing 'Get' methods, serving a similar function, have been marked as obsolete and updated to use the new 'From' methods.

src/modules/Elsa.CSharp/Models/OutputProxy.cs

@@ -18,22 +18,40 @@ public OutputProxy(ExpressionExecutionContext expressionExecutionContext)
  {
  _expressionExecutionContext = expressionExecutionContext;
  }
+
+ /// <summary>
+ /// Gets the value of the specified output from the specified activity.
+ /// </summary>
+ /// <param name="activityIdOrName">The ID or name of the activity that produced the output.</param>
+ /// <param name="outputName">The name of the output.</param>
+ /// <returns>The value of the output.</returns>
+ public object? From(string activityIdOrName, string? outputName = default) => _expressionExecutionContext.GetOutput(activityIdOrName, outputName);
+
+ /// <summary>
+ /// Gets the value of the specified output from the specified activity.
+ /// </summary>
+ /// <param name="activityIdOrName">The ID or name of the activity that produced the output.</param>
+ /// <param name="outputName">The name of the output.</param>
+ /// <returns>The value of the output.</returns>
+ public T? From<T>(string activityIdOrName, string? outputName = default) => Get(activityIdOrName, outputName).ConvertTo<T>();
 
  /// <summary>
  /// Gets the value of the specified output.
  /// </summary>
  /// <param name="activityIdOrName">The ID or name of the activity that produced the output.</param>
  /// <param name="outputName">The name of the output.</param>
  /// <returns>The value of the output.</returns>
- public object? Get(string activityIdOrName, string? outputName = default) => _expressionExecutionContext.GetOutput(activityIdOrName, outputName);
+ [Obsolete("Use From instead.")]
+ public object? Get(string activityIdOrName, string? outputName = default) => From(activityIdOrName, outputName);
 
  /// <summary>
  /// Gets the value of the specified output.
  /// </summary>
  /// <param name="activityIdOrName">The ID or name of the activity that produced the output.</param>
  /// <param name="outputName">The name of the output.</param>
  /// <returns>The value of the output.</returns>
- public T? Get<T>(string activityIdOrName, string? outputName = default) => Get(activityIdOrName, outputName).ConvertTo<T>();
+ [Obsolete("Use From instead.")]
+ public T? Get<T>(string activityIdOrName, string? outputName = default) => From<T>(activityIdOrName, outputName);
 
  /// <summary>
  /// Gets the result of the last activity that executed.