feat: async scraper

lua/cp/async/init.lua

@@ -0,0 +1,25 @@
+local M = {}
+
+local active_operation = nil
+
+function M.start_contest_operation(operation_name)
+  if active_operation then
+    error(
+      ("Contest operation '%s' already active, cannot start '%s'"):format(
+        active_operation,
+        operation_name
+      )
+    )
+  end
+  active_operation = operation_name
+end
+
+function M.finish_contest_operation()
+  active_operation = nil
+end
+
+function M.get_active_operation()
+  return active_operation
+end
+
+return M