Add settings to reduce left padding of line numbers

[dtonda8]

Check for existing issues

• Completed

Describe the feature

Looks like there is some free real estate on the left of the numbers. I think it'd look neater if line numbers were more centered/reducing left padding.

If applicable, add mockups / screenshots to help present your vision of the feature

Relevant settings for the above:

{
  "gutter": {
    "folds": false,
    "line_numbers": false,
    "code_actions": false,
    "runnables": true
  }
}

Sublime for reference:

[m0rg5]

Any progress here?