fix(nvim): update code formatting with gopls

nvim/.config/nvim/lua/lsp/gopls.lua

@@ -1,5 +1,20 @@
 local common = require('lsp.common')
 
+function OrgImports(wait_ms)
+  local params = vim.lsp.util.make_range_params()
+  params.context = {only = {"source.organizeImports"}}
+  local result = vim.lsp.buf_request_sync(0, "textDocument/codeAction", params, wait_ms)
+  for _, res in pairs(result or {}) do
+    for _, r in pairs(res.result or {}) do
+      if r.edit then
+        vim.lsp.util.apply_workspace_edit(r.edit, "utf-16")
+      else
+        vim.lsp.buf.execute_command(r.command)
+      end
+    end
+  end
+end
+
 function goimports(timeout_ms)
     local context = { only = { "source.organizeImports" } }
     vim.validate { context = { context, "t", true } }
@@ -38,14 +53,14 @@ function goimports(timeout_ms)
 end
 
 function format_with_imports(timeout_ms)
-    goimports(1000)
+    OrgImports(1000)
     vim.lsp.buf.formatting()
 end
 
 vim.cmd [[
     augroup gopls
         autocmd!
-        autocmd BufWritePre *.go lua format_with_imports(1000)
+        autocmd BufWritePre *.go lua format_with_imports(1000, "utf-16")
     augroup END
 ]]