Update CHANGELOG.md for version 4.19.3 and add Playwright end-to-end testing details

Author: Matthias Stein

CHANGELOG.md

@@ -2,6 +2,26 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.19.3] - 11.07.2025
+
+### Changes in pom.xml
+- Update `mapapps.version` property to `4.19.3`
+
+### Changes in package.json
+- see playwright section below
+
+### Integrated Playwright for end-to-end testing
+- Added a end-to-end browser test sample based on [Playwright](https://playwright.dev/)
+    - Added dev dependencies in package.json
+        - `"@playwright/test": "^1.52.0"`
+        - `"@types/node": "^22.15.17"`
+    - Added new tests under `src/test/end-to-end`
+    - scripts added to `package.json`:
+        - `"e2e-test": "npx playwright test"`
+        - `"e2e-test:headed": "npx playwright test --headed"`
+        - `"e2e-test:ui": "npx playwright test --ui"`
+
+
 ## [4.19.2] - 06.05.2025
 
 - Support for map.apps 4.19.2