New Operator, Alert and Proxy request handlers (#1846)

* Add agent dialog class

* Rename agent dialog data classes

* Alert dialog data updates

* Create operator and proxy handlers

extensions/agent/src/data/pickScheduleData.ts

@@ -6,8 +6,9 @@
 
 import * as sqlops from 'sqlops';
 import { AgentUtils } from '../agentUtils';
+import { IAgentDialogData } from '../interfaces';
 
-export class PickScheduleData {
+export class PickScheduleData implements IAgentDialogData {
 	public ownerUri: string;
 	public schedules: sqlops.AgentJobScheduleInfo[];
 	public selectedSchedule: sqlops.AgentJobScheduleInfo;