In Sublime Text I was able to customize the Ctrl+R (go to methods) behaviour. In my C++ code, I was able to use comments like // =my custom label=, and when I hit Ctrl+R I had all the functions in that file as well as the jump destinations in those comments, e. g. "my custom label".
What I loved about it is that I could mark useful locations in the code without the editor forcing me to alter the the structure of the code, e. g. by defining a function.
Is there anything similar in VS code to customize the behaviour of Ctrl+T (Go to symbol in workspace) or Ctrl+Shift+O (Go to symbol in editor) without affecting the code? Maybe an addon?