Add support support command like eslint.executeAutofix to start coc-diagnostic manyally

[utrumo]

Describe the bug Now coc-nvim support one formatter at some time (https://github.com/neoclide/coc.nvim/issues/2269). I use "stylelintplus.autoFixOnSave: true" and with this variant coc-diagnostico wants start automatic on save. It would not be bad to be able to run the coc-diagnostic formatter manually on save from .vimrc To Reproduce Steps to reproduce the behavior:

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4. See error

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[iamcco]

Sorry I don't understand what does it means.

[Freed-Wu]

wants start automatic on save.

You means format code on save? It should be related to coc.nvim, not this plugin.