fix(git): add vendor in .gitignore

vendor/google.golang.org/protobuf/internal/genid/goname.go

@@ -1,25 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package genid
-
-// Go names of implementation-specific struct fields in generated messages.
-const (
-	State_goname = "state"
-
-	SizeCache_goname  = "sizeCache"
-	SizeCacheA_goname = "XXX_sizecache"
-
-	WeakFields_goname  = "weakFields"
-	WeakFieldsA_goname = "XXX_weak"
-
-	UnknownFields_goname  = "unknownFields"
-	UnknownFieldsA_goname = "XXX_unrecognized"
-
-	ExtensionFields_goname  = "extensionFields"
-	ExtensionFieldsA_goname = "XXX_InternalExtensions"
-	ExtensionFieldsB_goname = "XXX_extensions"
-
-	WeakFieldPrefix_goname = "XXX_weak_"
-)