.Net: Change InstrumentedSK* types pulic to internal (#3179)

Resolves: #3166 

Change InstrumentedSK* types pulic to internal

---------

Co-authored-by: Dmytro Struk <13853051+dmytrostruk@users.noreply.github.com>

dotnet/src/Planners/Planners.Core/Action/InstrumentedActionPlanner.cs

@@ -18,7 +18,7 @@ namespace Microsoft.SemanticKernel.Planners;
 /// Instrumented planner that uses set of semantic functions to select one function out of many and create a plan.
 /// Captures planner-related logs and metrics.
 /// </summary>
-public class InstrumentedActionPlanner : IActionPlanner
+internal sealed class InstrumentedActionPlanner : IActionPlanner
 {
     /// <summary>
     /// Initialize a new instance of the <see cref="InstrumentedActionPlanner"/> class.

dotnet/src/Planners/Planners.Core/Sequential/InstrumentedSequentialPlanner.cs

@@ -18,7 +18,7 @@ namespace Microsoft.SemanticKernel.Planners;
 /// Instrumented planner that uses semantic function to create a sequential plan.
 /// Captures planner-related logs and metrics.
 /// </summary>
-public sealed class InstrumentedSequentialPlanner : ISequentialPlanner
+internal sealed class InstrumentedSequentialPlanner : ISequentialPlanner
 {
     /// <summary>
     /// Initialize a new instance of the <see cref="InstrumentedSequentialPlanner"/> class.

dotnet/src/Planners/Planners.Core/Stepwise/InstrumentedStepwisePlanner.cs

@@ -16,7 +16,7 @@ namespace Microsoft.SemanticKernel.Planners;
 /// Instrumented planner that creates a Stepwise plan using Mrkl systems.
 /// Captures planner-related logs and metrics.
 /// </summary>
-public class InstrumentedStepwisePlanner : IStepwisePlanner
+internal class InstrumentedStepwisePlanner : IStepwisePlanner
 {
     /// <summary>
     /// Initialize a new instance of the <see cref="InstrumentedStepwisePlanner"/> class.

dotnet/src/SemanticKernel.Core/Functions/InstrumentedSKFunction.cs

@@ -20,7 +20,7 @@ namespace Microsoft.SemanticKernel;
 /// <summary>
 /// Standard Semantic Kernel callable function with instrumentation.
 /// </summary>
-public sealed class InstrumentedSKFunction : ISKFunction
+internal sealed class InstrumentedSKFunction : ISKFunction
 {
     /// <inheritdoc/>
     public string Name => this._function.Name;

dotnet/src/SemanticKernel.Core/Planning/InstrumentedPlan.cs

@@ -17,7 +17,7 @@ namespace Microsoft.SemanticKernel.Planning;
 /// <summary>
 /// Standard Semantic Kernel callable plan with instrumentation.
 /// </summary>
-public sealed class InstrumentedPlan : IPlan
+internal sealed class InstrumentedPlan : IPlan
 {
     /// <inheritdoc/>
     public string Name => this._plan.Name;