init backend, added admin page in front

Signed-off-by: Nicolas Froger <nicolas@kektus.xyz>

summer2024-frontend/src/components/ui/table/TableHead.vue

@@ -0,0 +1,20 @@
+<script setup>
+import { cn } from "@/lib/utils";
+
+const props = defineProps({
+  class: { type: null, required: false },
+});
+</script>
+
+<template>
+  <th
+    :class="
+      cn(
+        'h-12 px-4 text-left align-middle font-medium text-muted-foreground [&:has([role=checkbox])]:pr-0',
+        props.class,
+      )
+    "
+  >
+    <slot />
+  </th>
+</template>