Add `--exclude-formatters` option

[MagicRB]

Is your feature request related to a problem? Please describe.

It would be nice, when running treefmt --stdin to be able to exclude a formatter. In my case I want to exclude deadnix as I'm used to saving files aggressively (I use format on save) and deadnix keeps deleting my code.

Describe the solution you'd like

Add a --exclude-formatters flag, which is mutually exclusive with --formatters and allows me to specify which formatters to exclude.

Describe alternatives you've considered

Manually querying the list of formatters and excluding in a the eval block of .dir-locals.el.

Additional context

[jfly]

I wonder if this would pair well with a tagging or categorization system for the formatters. For example, you could tag this formatter as "annoying" and configure your editor to skip "annoying" formatters. I think we may have discussed something like this before.

Manually querying the list of formatters and excluding in a the eval block of .dir-locals.el.

Sorry, what is this?

[MagicRB]

Sorry, what is this?
ah sorry, thats an Emacs thing. Essentially when i open a file in a repo with treefmt i can set it up to execute emacs lisp code which could do the filtering itself by pulling out the list of formatters, removing the ones i dont want and then calling treefmt with --formatters.

I wonder if this would pair well with a tagging or categorization system for the formatters. For example, you could tag this formatter as "annoying" and configure your editor to skip "annoying" formatters. I think we may have discussed something like this before.

That would resolve my problem, I just need to be able to invoke treefmt --stdin with a subset of the formatters i deem not annoying.