store asset content type in db, add video support

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

summer2024-frontend/src/components/PostComponent.vue

@@ -62,7 +62,18 @@ function postDataToggle() {
       <img
         class="absolute top-0 left-0 w-full h-full object-cover -z-10"
         :data-src="asset.presignedUrl"
+        v-if="asset.contentType.startsWith('image/')"
       />
+      <video
+        class="absolute top-0 left-0 w-full h-full object-cover -z-10"
+        loop
+        muted="true"
+        playsinline
+        data-autoplay
+        v-else
+      >
+        <source :src="asset.presignedUrl" :type="asset.contentType" />
+      </video>
       <div
         class="grid grid-cols-3 grid-rows-5 absolute w-full h-full top-0 left-0 pointer-events-none"
       >