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/checks/imports.go

@@ -0,0 +1,46 @@
+// 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 checks
+
+import (
+	"strings"
+
+	"golang.org/x/tools/go/analysis"
+)
+
+var Imports = &analysis.Analyzer{
+	Name: "imports",
+	Doc:  "check for import order",
+	Run:  runImports,
+}
+
+func runImports(pass *analysis.Pass) (interface{}, error) {
+	for _, file := range pass.Files {
+		level := 0
+		for _, im := range file.Imports {
+			var lvl int
+			val := im.Path.Value
+			switch {
+			case importHasPrefix(val, "code.gitea.io"):
+				lvl = 2
+			case strings.Contains(val, "."):
+				lvl = 3
+			default:
+				lvl = 1
+			}
+
+			if lvl < level {
+				pass.Reportf(file.Pos(), "Imports are sorted wrong")
+				break
+			}
+			level = lvl
+		}
+	}
+	return nil, nil
+}
+
+func importHasPrefix(s, p string) bool {
+	return strings.HasPrefix(s, "\""+p)
+}