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/helper/ResizingTextEdit.hpp

@@ -43,6 +43,7 @@ private:
     QCompleter *completer_ = nullptr;
     bool completionInProgress_ = false;
 
+    bool eventFilter(QObject *widget, QEvent *event) override;
 private slots:
     void insertCompletion(const QString &completion);
 };