ADS changes for opening XEL files (#23666)

* Initial set of changes for opening XEL files in ADS

* Code cleanup and update STS version

* Fix runtime errors

* Address comments

* Address comments and update Start button to be disabled for file session

* Code cleanup

src/sql/azdata.proposed.d.ts

@@ -2028,4 +2028,13 @@ declare module 'azdata' {
 		 */
 		setActiveCell(row: number, column: number): void;
 	}
+
+	export interface ProfilerProvider {
+		startSession(sessionId: string, sessionName: string, sessionType?: ProfilingSessionType): Thenable<boolean>;
+	}
+
+	export enum ProfilingSessionType {
+		RemoteSession = 0,
+		LocalFile = 1
+	}
 }