[API] Add Reactions (#9220)

* reject reactions wich ar not allowed

* dont duble check CreateReaction now throw ErrForbiddenIssueReaction

* add /repos/{owner}/{repo}/issues/comments/{id}/reactions endpoint

* add Find Functions

* fix some swagger stuff + add issue reaction endpoints + GET ReactionList now use FindReactions...

* explicite Issue Only Reaction for FindReactionsOptions with "-1" commentID

* load issue; load user ...

* return error again

* swagger def canged after LINT

* check if user has ben loaded

* add Tests

* better way of comparing results

* add suggestion

* use different issue for test
(dont interfear with integration test)

* test dont compare Location on timeCompare

* TEST: add forbidden dubble add

* add comments in code to explain

* add settings.UI.ReactionsMap
so if !setting.UI.ReactionsMap[opts.Type] works

modules/structs/issue_reaction.go

@@ -0,0 +1,22 @@
+// Copyright 2019 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 structs
+
+import (
+	"time"
+)
+
+// EditReactionOption contain the reaction type
+type EditReactionOption struct {
+	Reaction string `json:"content"`
+}
+
+// ReactionResponse contain one reaction
+type ReactionResponse struct {
+	User     *User  `json:"user"`
+	Reaction string `json:"content"`
+	// swagger:strfmt date-time
+	Created time.Time `json:"created_at"`
+}