Adding Execution Plan Editor to ADS (#18696)

* Pushing Execution Plan Editor

* Renaming class
Handling error

* Awaiting for handlers to be registered

* Addressing some PR comments

* Fixing return type for provider

* Fixing editor id and removing unnecessary overrides

* Adding a namespace

* adding execution plan namespace

* Adding protocol comment

* Fixing if logic

* Fixing error message

* Cleaning up code

* cleanup code

* Adding help comments

* Fixing method call

* Using path.ts to get the base file name

* converting to lambda functions

* Adding comment for run action

* Fixing pr comments

* Fixing editor label

* Fixing doc comments

* Adding some more comments

* Fixign branding in comments

src/sql/workbench/common/editor/query/executionPlanState.ts

@@ -6,7 +6,7 @@
 import type * as azdata from 'azdata';
 
 export class ExecutionPlanState {
-	graphs: azdata.ExecutionPlanGraph[] = [];
+	graphs: azdata.executionPlan.ExecutionPlanGraph[] = [];
 	clearExecutionPlanState() {
 		this.graphs = [];
 	}