I just did a search for "sublime line padding" and found: http://wbond.net/sublime_packages/alignment
Hope it helps.
From the website:
Features
Align multiple selections to the same column by inserting spaces (or tabs)
Align all lines in a multi-line selection to the same indent level
Align the first = on each line of a multi-line selection to the same column See the screenshots below for examples of the plugin in action.
Installation Download Package Control and use the Package Control: Install Package command from the command palette. Using Package Control ensures Alignment will stay up to date automatically.