feat(extras): added conform.nvim extra you can use instead of null-ls/none-ls

lua/lazyvim/plugins/lsp/format.lua

@@ -5,6 +5,11 @@ local M = {}
 ---@type PluginLspOpts
 M.opts = nil
 
+-- Allow plugins to set a custom formatter for a buffer.
+-- See the conform extra for an example.
+---@type fun(bufnr:number):boolean
+M.custom_format = nil
+
 function M.enabled()
   return M.opts.autoformat
 end
@@ -30,6 +35,10 @@ function M.format(opts)
     return
   end
 
+  if M.custom_format and M.custom_format(buf) then
+    return
+  end
+
   local formatters = M.get_formatters(buf)
   local client_ids = vim.tbl_map(function(client)
     return client.id