Fix Default Height for Editor Component (#2920)

Editor component didn't have a minimum height set, so fixing this by passing through a minimum height to EditorComponent. Now, if the scrollable height of the editor is less than the minimum height, we use the minimum height as the height of the component.

Also fixed an issue where the markdown code editor's height was far too high. Now we're calculating the height on the layout() call, which gets called every time we display the markdown editor.

src/sql/sqlops.proposed.d.ts

@@ -595,6 +595,10 @@ declare module 'sqlops' {
 		 * The languge mode for this text editor. The language mode is SQL by default.
 		 */
 		languageMode?: string;
+		/**
+		 * Minimum height for editor component
+		 */
+		minimumHeight?: number;
 	}
 
 	export interface ButtonProperties extends ComponentProperties, ComponentWithIcon {
@@ -722,6 +726,11 @@ declare module 'sqlops' {
 		 */
 		isAutoResizable: boolean;
 
+		/**
+		 * Minimum height for editor component
+		 */
+		minimumHeight: number;
+
 	}
 
 	export interface ButtonComponent extends Component, ButtonProperties {