visual studio code – vscode extension how to add a compiler for my self made language

I made a languages myself and have written a compiler.

I’m now in the process of improving the compiler and I want to be able to press the ‘run-code’ button to compile my code.

I want to use an extension because I want others to be able to use it aswell and want to add syntax highlighting later

I’ve read a lot of stackoverflow questions and the vscode extension docs, but it’s either about changing the vscode settings or about extensions, but about the formatting, highlighting etc.