docs: add blob upload prefix

Author: atinux

docs/content/4.changelog/blob-upload-prefix.md

@@ -0,0 +1,36 @@
+---
+title: Blob Upload Prefix
+description: "It is now possible to upload a blob and setting the prefix beforehand."
+date: 2024-07-02
+image: '/images/changelog/blob-upload-prefix.png'
+category: Admin
+authors:
+  - name: Sebastien Chopin
+    avatar: 
+      src: https://avatars.githubusercontent.com/u/904724?v=4
+    to: https://x.com/atinux
+    username: atinux
+  - name: Ahad Birang
+    avatar: 
+      src: https://avatars.githubusercontent.com/u/2047945?v=4
+    to: https://x.com/a_birang
+    username: a_birang
+---
+
+It is now possible to set the prefix before uploading a blob in the NuxtHub admin and in the Nuxt Devtools (NuxtHub Blob tab).
+
+::video{poster="https://res.cloudinary.com/nuxt/video/upload/so_0/v1719931201/nuxthub/admin-blob-prefix_akfj3k.jpg" controls class="w-full h-auto"}
+  :source{src="https://res.cloudinary.com/nuxt/video/upload/v1719931201/nuxthub/admin-blob-prefix_akfj3k.webm" type="video/webm"}
+  :source{src="https://res.cloudinary.com/nuxt/video/upload/v1719931201/nuxthub/admin-blob-prefix_akfj3k.mp4" type="video/mp4"}
+  :source{src="https://res.cloudinary.com/nuxt/video/upload/v1719931201/nuxthub/admin-blob-prefix_akfj3k.ogg" type="video/ogg"}
+::
+
+::callout{icon="i-ph-book-open-duotone" to="/docs/storage/blob"}
+Learn more about Blob Storage.
+::
+
+::tip
+This feature is available on all [NuxtHub plans](/pricing).
+::
+
+Head over the [NuxtHub admin](https://admin.hub.nuxt.com) to try this feature or locally in the Nuxt Devtools.