Show line numbers for code snippets

[jimgymjim]

Is your feature request related to a problem?

Currently there is no line number in code snippets, adding line number in code snippets would be a great feature.

Describe the solution you'd like

Adding line numbers in the left side of each line like IDEs on code snippets.

Describe alternatives you've considered

Nothing.

Additional context

Link to specific line of code, starting line numbers from custom number which user set also are useful features.

[Adam-Kay]

bump. I think this would be useful also