feature request: support LSP standard workspace/configuration for server configurations

[aanderse]

context: i am using a LSP called nixd

nixd has some configuration options but i don't think i can use them with this plugin - see https://github.com/nix-community/nixd/blob/main/nixd/docs/configuration.md for details

it looks like micro-plugin-lsp would have to implement this functionality as briefly outlined in https://microsoft.github.io/language-server-protocol/specifications/specification-3-15/#workspace_configuration

i thought i would file this as a feature request in case anyone is willing to work on it

thanks for this plugin - it is great!