Update .gitignore and configure Playwright to run in headless mode

Author: fredpena

.gitignore

@@ -8,6 +8,8 @@
 *.iml
 .DS_Store
 
+/htmlReport/
+
 # The following files are generated/updated by vaadin-maven-plugin
 node_modules/
 src/main/frontend/generated/

src/test/java/org/javadominicano/PlaywrightIT.java

@@ -22,7 +22,7 @@ public static void beforeAll() {
         playwright = Playwright.create();
         BrowserType browserType = playwright.chromium();
 
-        BrowserType.LaunchOptions launchOptions = new BrowserType.LaunchOptions();
+        BrowserType.LaunchOptions launchOptions = new BrowserType.LaunchOptions().setHeadless(true);
         launchOptions.headless = false;
 
         browser = browserType.launch(launchOptions);