Add Azure ML Pipeline CODEOWNERS (Azure#26710)

* update code owners

* add more paths

Co-authored-by: Clement Wang <clwan@microsoft.com>

Author: wangchao1230

.github/CODEOWNERS

@@ -156,6 +156,16 @@ sdk/confidentialledger/azure-confidentialledger                      @lynshi
 /sdk/ml/azure-ai-ml/azure/ai/ml/_schema/job                          @DouglasXiaoMS @TonyJ1 @wangchao1230
 /sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job                        @DouglasXiaoMS @TonyJ1 @wangchao1230
 
+# PRLabel: %ML-Pipelines
+/sdk/ml/azure-ai-ml/azure/ai/ml/_schema/pipeline                     @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/_schema/component                    @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/_schema/schedule                     @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/dsl                                  @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_schedule                   @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_component                  @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders                   @wangchao1230
+/sdk/ml/azure-ai-ml/azure/ai/ml/_internal                            @wangchao1230
+
 # PRLabel: %Maps
 /sdk/maps/                                                           @alextts627