Update gitea-vet to v0.2.1 (#12282)

* change to new code location

* vendor

* tagged version v0.2.0

* gitea-vet v0.2.1

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

vendor/code.gitea.io/gitea-vet/main.go

@@ -0,0 +1,19 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"code.gitea.io/gitea-vet/checks"
+
+	"golang.org/x/tools/go/analysis/unitchecker"
+)
+
+func main() {
+	unitchecker.Main(
+		checks.Imports,
+		checks.License,
+		checks.Migrations,
+	)
+}