Hi,
Does anyone know how can i enable this feature in my VsCode ?
Is it an extension or what ?
Is your project under version control? Did you add the file to version control?
I don’t know how to do that
Well - Mosh has an excellent git course 
Just waiting for the right time and right discount to buy it
But the thins is these colored lines used to be there whether it was under version control or not and it was before vscode major visual update