add tailwind

- add build-tailwind.sh
- add build-tailwind.bat
- add tailwind.config.js
- add layout.html

src/main/resources/templates/layout.html

@@ -40,7 +40,8 @@
     </div>
   </div>
 </header>
-<footer th:fragment="footer" class="bg-gray-800 border-t border-green-900 mt-4">
+<th:block th:fragment="footer">
+<footer class="bg-gray-800 border-t border-green-900 mt-4">
   <div class="container mx-auto p-4">
     <div class="flex flex-col sm:flex-row justify-between items-center text-sm">
       <div class="text-green-600 mb-2 sm:mb-0">Hlaeja © 2025 Lulz Ltd</div>
@@ -48,6 +49,7 @@
     </div>
   </div>
 </footer>
+</th:block>
 <div th:fragment="script">
   <script th:src="@{/js/management.js}"></script>
 </div>