refactor: load Twitch emotes from Helix (#5239)

src/util/Expected.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <nonstd/expected.hpp>
+
+class QString;
+
+namespace chatterino {
+
+template <typename T, typename E>
+using Expected = nonstd::expected_lite::expected<T, E>;
+
+template <typename T>
+using ExpectedStr = Expected<T, QString>;
+
+// convenience function from nonstd/expected.hpp
+template <typename E>
+constexpr nonstd::unexpected<std::decay_t<E>> makeUnexpected(E &&value)
+{
+    return nonstd::unexpected<std::decay_t<E>>(std::forward<E>(value));
+}
+
+}  // namespace chatterino