message: Add snippet to code complete
diff: @@ -11,7 +11,7 @@ import {
  SignatureHelp, SymbolInformation, SymbolKind, TextDocumentEdit, TextDocuments, TextDocumentSyncKind,
  TextEdit, VersionedTextDocumentIdentifier, ProposedFeatures, DiagnosticTag, Proposed, InsertTextFormat,
  SelectionRangeRequest, SelectionRange, InsertReplaceEdit, SemanticTokensClientCapabilities, SemanticTokensLegend,
  - SemanticTokensBuilder, SemanticTokensRegistrationType, SemanticTokensRegistrationOptions, ProtocolNotificationType, ChangeAnnotation, AnnotatedTextEdit, WorkspaceChange
  + SemanticTokensBuilder, SemanticTokensRegistrationType, SemanticTokensRegistrationOptions, ProtocolNotificationType, ChangeAnnotation, AnnotatedTextEdit, WorkspaceChange, CompletionItemKind
  } from 'vscode-languageserver/node';
  import {
  @@ -300,6 +300,12 @@ connection.onCompletion((params, token): CompletionItem[] => {
  );
  result.push(item);
  + item = CompletionItem.create('-record');
  + item.insertText = '-record(${1:name}, {${2:field} = ${3:Value} :: ${4:Type}()}).'
  + item.insertTextFormat = InsertTextFormat.Snippet;
  + item.kind = CompletionItemKind.Field;
  + result.push(item);
  +
  return result;
  });
  