Introduce a reload-lsp command

[thomasaarholt]

I have searched for an equivalent issue, but didn't find anything.

I would like to be able to reload the lsp(s) that are running in my helix instance.

1. I just encountered a situation where in one terminal window I have a helix instance open looking at a python file that imports from a file: ´from foo.bar import baz´
2. In another terminal window, I deleted bar.py.
3. In helix I can still see the type of baz when I hover and do space k. Even when I reload the window I close the buffer and reopen it (I guess those two are equivalent). I cannot "go to definition", here I just get a "No definition found."
4. If I open another file that imports from foo.bar, I have red underlines and the file is understood to not exist.

I would have liked to have a red underline on the import in 1., letting me know that I need to update the import of fix the issue.

I assume this is due to the lsp not having realised that the file is deleted. Hence, I would like to be able to restart the lsp.

Config
I'm using pyright and ruff together on master (helix 23.10 (b81aacc5)) using this languages.toml.

[dvic]

There is already a lsp-restart command.

[dvic]

As a tip: you can search for commands using SPACE + ?, searching for 'restart lsp' gives you the result.

[thomasaarholt]

Thanks! No idea how I missed this. I think I got hung up searching for reload, but restart makes more sense!