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/widgets/settingspages/KeyboardSettingsPage.hpp

@@ -1,13 +1,20 @@
 #pragma once
 
+#include "widgets/helper/EditableModelView.hpp"
 #include "widgets/settingspages/SettingsPage.hpp"
 
 namespace chatterino {
 
+class HotkeyModel;
+
 class KeyboardSettingsPage : public SettingsPage
 {
 public:
     KeyboardSettingsPage();
+
+private:
+    void tableCellClicked(const QModelIndex &clicked, EditableModelView *view,
+                          HotkeyModel *model);
 };
 
 }  // namespace chatterino