Octave Hacking is an attempt to turn VS Code into a decent IDE for GNU Octave.
Octave Hacking does not support debugging Octave inside VS Code. For that, I recommend you install the Octave Debugger extension by Paulo Silva.
The Octave Hacking extension may be particularly useful to Mac users, because the Octave GUI for newer versions of Octave (5.x and 6.x) does not work correctly on macOS. VS Code with this extension and a debugging extension could be a good substitute.
Octave Hacking is written by Andrew Janke.
The project home page is https://github.com/apjanke/vscode-octave-hacking.
The grammar for syntax highlighting is a lightly customized version of the TextMate Octave.tmLanguage grammar.