feat: save mime type data to dc image (#6)

* feat: save mime type data to dc image

* docs: Readme with mimetype

---------

Co-authored-by: Neil Mistry <30687441+neilmistryamplience@users.noreply.github.com>

README.md

@@ -328,7 +328,8 @@ Example:
     "id": "{{id_of_asset_in_amplience}}",
     "name": "{{name_of_asset_in_amplience}}",
     "endpoint": "{{amplience_media_endpoint}}",
-    "defaultHost": "{{amplience_default_host}}"
+    "defaultHost": "{{amplience_default_host}}",
+    "mimeType": "{{amplience_asset_mimeType}}",
   }
 }
 ```

src/contexts/content-field-extension/WithContentFieldExtension.tsx

@@ -124,6 +124,7 @@ function WithContentFieldExtension({ children }: { children: ReactNode }) {
       name: storedAsset.name,
       endpoint: amplienceConfig.endpoint,
       defaultHost: amplienceConfig.defaultHost,
+      mimeType: storedAsset.mimeType,
     };
   };