Add custom hotkeys. (#2340)

Co-authored-by: LosFarmosCTL <80157503+LosFarmosCTL@users.noreply.github.com>
Co-authored-by: Paweł <zneix@zneix.eu>
Co-authored-by: Felanbird <41973452+Felanbird@users.noreply.github.com>
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/controllers/hotkeys/HotkeyCategory.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <QString>
+
+namespace chatterino {
+
+// HotkeyCategory describes where the hotkeys action takes place.
+// Each HotkeyCategory represents a widget that has customizable hotkeys. This
+// is needed because more than one widget can have the same or similar action.
+enum class HotkeyCategory {
+    PopupWindow,
+    Split,
+    SplitInput,
+    Window,
+};
+
+struct HotkeyCategoryData {
+    QString name;
+    QString displayName;
+};
+
+}  // namespace chatterino