feat(lua_ls): add rootPath to workspace.library

[Mo-tmd]

This seems to make it possible to jump to any lua file under rootPath, regardless of directory structure.

I'm a noob in this area, please let me know if there's anything strange.

[justinmk]

This seems interesting but in the Lua projects I tried, it doesn't seem to have any effect, the library is always {}.

Here is the output of :lua =vim.lsp.config['lua_ls'] :

{
  before_init = <function 1>,
  cmd = { "lua-language-server" },
  filetypes = { "lua" },
  name = "lua_ls",
  root_markers = { ".luarc.json", ".luarc.jsonc", ".luacheckrc", ".stylua.toml", "stylua.toml", "selene.toml", "selene.yml", ".git" },
  settings = {
    Lua = {
      workspace = {
        library = {}
      }
    }
  }
}

What is an example that you are seeing? And what does :checkhealth vim.lsp show for you?