[v3.2] Add grafana dashboard importing API (#11)

* Add API to import grafana templates to kubesphere dashboard
* Merge and fix the latest codes from kubesphere #2501

Signed-off-by: zhu733756 <talonzhu@yunify.com>

vendor/github.com/gosimple/slug/languages_substitution.go

@@ -0,0 +1,57 @@
+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package slug
+
+func init() {
+	// Merge language subs with the default one
+	for _, sub := range []*map[rune]string{&deSub, &enSub, &plSub, &esSub} {
+		for key, value := range defaultSub {
+			(*sub)[key] = value
+		}
+	}
+}
+
+var defaultSub = map[rune]string{
+	'"':  "",
+	'\'': "",
+	'’':  "",
+	'‒':  "-", // figure dash
+	'–':  "-", // en dash
+	'—':  "-", // em dash
+	'―':  "-", // horizontal bar
+}
+
+var deSub = map[rune]string{
+	'&': "und",
+	'@': "an",
+}
+
+var enSub = map[rune]string{
+	'&': "and",
+	'@': "at",
+}
+
+var plSub = map[rune]string{
+	'&': "i",
+	'@': "na",
+}
+
+var esSub = map[rune]string{
+	'&': "y",
+	'@': "en",
+}
+
+var grSub = map[rune]string{
+	'&': "kai",
+	'η': "i",
+	'ή': "i",
+	'Η': "i",
+	'ι': "i",
+	'ί': "i",
+	'Ι': "i",
+	'χ': "x",
+	'Χ': "x",
+}