Support lsp_workspace_commands with arguments

[Feel-ix-343]

Description: #9210

[ModProg]

I would also like to see this, in my usecase it is a spell checking lsp where you can switch the spell checking language via a SetLanguage command, but that obviously only works if you can send it the correct language.

[dam4rus]

I've seen the PR that adds this functionality, which is nice. But are there any plans to somehow provide configuration for each workspace command of an LSP? E.g. gopls's tidy command accepts a json object like this {"URIs": ["file:///path/to/module/dir"]}. Typing this every time I want to run tidy could be pretty cumbersome. In this exact case it would make sense to always send the lsp's root directory in this format.