add option to disable trim current line on autosave

[aboettger-tuhh]

Please add an option

• dont't trim current line on autosave

[seanhamlin]

Yes please. This is super annoying when autosave is on (even with a short delay). I guess a 'fix' is to not autosave as often, however I would much prefer the trimmer to have the above mentioned option. That would be ace.

Current workaround:

    "files.autoSave": "afterDelay",
    "files.autoSaveDelay": 20000,

[propertone]

Thoughts on fixing this? Would you be open to a PR contributing this change?