feat(lsp): allow disabling autoformat for certain buffers

lua/lazyvim/plugins/lsp/format.lua

@@ -5,7 +5,12 @@ local M = {}
 M.autoformat = true
 
 function M.toggle()
-  M.autoformat = not M.autoformat
+  if vim.b.autoformat == false then
+    vim.b.autoformat = nil
+    M.autoformat = true
+  else
+    M.autoformat = not M.autoformat
+  end
   if M.autoformat then
     Util.info("Enabled format on save", { title = "Format" })
   else
@@ -15,6 +20,9 @@ end
 
 function M.format()
   local buf = vim.api.nvim_get_current_buf()
+  if vim.b.autoformat == false then
+    return
+  end
   local ft = vim.bo[buf].filetype
   local have_nls = #require("null-ls.sources").get_available(ft, "NULL_LS_FORMATTING") > 0