tmpl(users): add table zebra striping [skip ci]

assets/input/css/tailwind.css

@@ -1,3 +1,9 @@
 @tailwind base;
 @tailwind components;
 @tailwind utilities;
+
+@layer utilities {
+  .striped tr:nth-child(even) {
+    @apply bg-gray-100 dark:bg-gray-800
+  }
+}

templates/manage/user.tmpl

@@ -17,7 +17,7 @@
 				</a>
 			</div>
 			<div class="p-2 mt-3 border-2 dark:border-slate-500 rounded-sm overflow-x-auto">
-				<table class="text-center text-gray-500 dark:text-gray-300 w-full">
+				<table class="text-center text-gray-500 dark:text-gray-300 w-full striped">
 				<thead>
 					<tr>
 						<th scope="col" class="md:p-2 sm:p-0 text-slate-600 dark:text-slate-400">Username</th>