feat(plugins-runtime): allow openPage() to toggle opening a new window

libs/plugin-types/index.d.ts

@@ -1231,13 +1231,14 @@ export interface Context {
   /**
    * Changes the current open page to given page. Requires `content:read` permission.
    * @param page the page to open
+   * @param newWindow if true opens the page in a new window
    *
    * @example
    * ```js
    * context.openPage(page);
    * ```
    */
-  openPage(page: Page): void;
+  openPage(page: Page, newWindow?: boolean): void;
 
   /**
    * Aligning will move all the selected layers to a position relative to one

libs/plugins-runtime/src/lib/api/index.ts

@@ -317,9 +317,9 @@ export function createApi(
       return plugin.context.createPage();
     },
 
-    openPage(page: Page): void {
+    openPage(page: Page, newWindow?: boolean): void {
       checkPermission('content:read');
-      plugin.context.openPage(page);
+      plugin.context.openPage(page, newWindow ?? true);
     },
 
     alignHorizontal(