[Glitch] Allow removing yourself from a collection

Port 3a796544e3 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/api/collections.ts

@@ -49,3 +49,9 @@ export const apiRemoveCollectionItem = (collectionId: string, itemId: string) =>
   apiRequestDelete<WrappedCollectionAccountItem>(
     `v1_alpha/collections/${collectionId}/items/${itemId}`,
   );
+
+export const apiRevokeCollectionInclusion = (
+  collectionId: string,
+  itemId: string,
+) =>
+  apiRequestPost(`v1_alpha/collections/${collectionId}/items/${itemId}/revoke`);