add playwright tests

commafeed-server/src/test/java/com/commafeed/e2e/PlaywrightTestUtils.java

@@ -0,0 +1,16 @@
+package com.commafeed.e2e;
+
+import com.microsoft.playwright.Page;
+
+import lombok.experimental.UtilityClass;
+
+@UtilityClass
+public class PlaywrightTestUtils {
+
+	public static void login(Page page) {
+		page.locator("[placeholder='User Name or E-mail']").fill("admin");
+		page.locator("[placeholder='Password']").fill("admin");
+		page.locator("button:has-text('Log in')").click();
+	}
+
+}