build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/graphql/upload.ts

@@ -0,0 +1,18 @@
+import gql from "graphql-tag";
+
+export const UPLOAD_MEDIA = gql`
+  mutation UploadMedia($file: Upload!, $alt: String, $name: String!) {
+    uploadMedia(file: $file, alt: $alt, name: $name) {
+      url
+      id
+    }
+  }
+`;
+
+export const REMOVE_MEDIA = gql`
+  mutation RemoveMedia($id: ID!) {
+    removeMedia(id: $id) {
+      id
+    }
+  }
+`;