Add vk bridge (#1372)

* Add vk bridge

* Vk bridge attachments

* Vk bridge forwarded messages

* Vk bridge sample config and code cleanup

* Vk bridge add vendor

* Vk bridge message edit

* Vk bridge: fix fetching names of other bots

* Vk bridge: code cleanup

* Vk bridge: fix shadows declaration

* Vk bridge: remove UseFileURL

vendor/github.com/SevereCloud/vksdk/v2/object/board.go

@@ -0,0 +1,40 @@
+package object // import "github.com/SevereCloud/vksdk/v2/object"
+
+// BoardTopic struct.
+type BoardTopic struct {
+	Comments  int         `json:"comments"`   // Comments number
+	Created   int         `json:"created"`    // Date when the topic has been created in Unixtime
+	CreatedBy int         `json:"created_by"` // Creator ID
+	ID        int         `json:"id"`         // Topic ID
+	IsClosed  BaseBoolInt `json:"is_closed"`  // Information whether the topic is closed
+	IsFixed   BaseBoolInt `json:"is_fixed"`   // Information whether the topic is fixed
+	Title     string      `json:"title"`      // Topic title
+	Updated   int         `json:"updated"`    // Date when the topic has been updated in Unixtime
+	UpdatedBy int         `json:"updated_by"` // ID of user who updated the topic
+}
+
+// BoardTopicComment struct.
+type BoardTopicComment struct {
+	Attachments []WallCommentAttachment `json:"attachments"`
+	Date        int                     `json:"date"`    // Date when the comment has been added in Unixtime
+	FromID      int                     `json:"from_id"` // Author ID
+	ID          int                     `json:"id"`      // Comment ID
+	// RealOffset   int                     `json:"real_offset"` // Real position of the comment
+	Text string `json:"text"` // Comment text
+	// TopicID      int                     `json:"topic_id"`
+	// TopicOwnerID int                     `json:"topic_owner_id"`
+	Likes   BaseLikesInfo `json:"likes"`
+	CanEdit BaseBoolInt   `json:"can_edit"` // Information whether current user can edit the comment
+}
+
+// BoardTopicPoll struct.
+type BoardTopicPoll struct {
+	AnswerID int           `json:"answer_id"` // Current user's answer ID
+	Answers  []PollsAnswer `json:"answers"`
+	Created  int           `json:"created"`   // Date when poll has been created in Unixtime
+	IsClosed BaseBoolInt   `json:"is_closed"` // Information whether the poll is closed
+	OwnerID  int           `json:"owner_id"`  // Poll owner's ID
+	PollID   int           `json:"poll_id"`   // Poll ID
+	Question string        `json:"question"`  // Poll question
+	Votes    string        `json:"votes"`     // Votes number
+}