Add an endpoint for deleting emoji packs

lib/pleroma/web/emoji_api/emoji_api_controller.ex

@@ -210,4 +210,16 @@ keeping it in cache for #{div(cache_ms, 1000)}s")
         conn |> put_status(:internal_server_error) |> text(e)
     end
   end
+
+  def delete(conn, %{"name" => name}) do
+    pack_dir = Path.join(@emoji_dir_path, name)
+
+    case File.rm_rf(pack_dir) do
+      {:ok, _} ->
+        conn |> text("ok")
+
+      {:error, _} ->
+        conn |> put_status(:internal_server_error) |> text("Couldn't delete the pack #{name}")
+    end
+  end
 end

lib/pleroma/web/router.ex

@@ -218,6 +218,7 @@ defmodule Pleroma.Web.Router do
       # Modifying packs
       pipe_through([:admin_api, :oauth_write])
 
+      delete("/delete/:name", EmojiAPIController, :delete)
       post("/download_from", EmojiAPIController, :download_from)
     end