Support editor content change notification, URI property and correctly align toolbar items (#2327)

* Support editor content change notification, URI property and correctly align toolbar items

* Better fix for toolbar orientation, plus minor editor fixes

src/sql/sqlops.proposed.d.ts

@@ -579,6 +579,17 @@ declare module 'sqlops' {
 		 * The languge mode for this text editor. The language mode is SQL by default.
 		 */
 		languageMode: string;
+		/**
+		 * The editor Uri which will be used as a reference for VSCode Language Service.
+		 * Currently this is auto-generated by the framework but can be queried after
+		 * view initialization is completed
+		 */
+		readonly editorUri: string;
+		/**
+		 * An event called when the editor content is updated
+		 */
+		readonly onContentChanged: vscode.Event<any>;
+
 	}
 
 	export interface ButtonComponent extends Component, ButtonProperties {