Hi pompaz,
I’m sure someone can and will help with your questions. Your post should be moved to another topic, it may receive more attention, this is for tutorials and examples.
Maybe Apps & Services, VS Code, would be more appropriate. I have moved your topic to this location.
Here’s a topic, with several links, you may find interesting and hopefully helpful.
https://community.openhab.org/t/vs-code-openhab-extension-no-code-completion-active/52873?u=h102
Thanks