API: Move AllowedReactions endpoint into GetGenneralUI endpoint + creat new swagger section settings (#11854)

* move Setting function into its own package

* swagger add&use new section "settings"

* move api AllowedReactions into general UI-Settings endpoint

* prepare TEST

* lint

routers/api/v1/swagger/misc.go

@@ -21,10 +21,3 @@ type swaggerResponseStringSlice struct {
 	// in:body
 	Body []string `json:"body"`
 }
-
-// GeneralRepoSettings
-// swagger:response GeneralRepoSettings
-type swaggerResponseGeneralRepoSettings struct {
-	// in:body
-	Body api.GeneralRepoSettings `json:"body"`
-}

routers/api/v1/swagger/settings.go

@@ -0,0 +1,21 @@
+// 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 swagger
+
+import api "code.gitea.io/gitea/modules/structs"
+
+// GeneralRepoSettings
+// swagger:response GeneralRepoSettings
+type swaggerResponseGeneralRepoSettings struct {
+	// in:body
+	Body api.GeneralRepoSettings `json:"body"`
+}
+
+// GeneralUISettings
+// swagger:response GeneralUISettings
+type swaggerResponseGeneralUISettings struct {
+	// in:body
+	Body api.GeneralUISettings `json:"body"`
+}