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/secure.go

@@ -0,0 +1,33 @@
+package object // import "github.com/SevereCloud/vksdk/v2/object"
+
+// SecureLevel struct.
+type SecureLevel struct {
+	Level int `json:"level"` // Level
+	UID   int `json:"uid"`   // User ID
+}
+
+// SecureSmsNotification struct.
+type SecureSmsNotification struct {
+	AppID   int    `json:"app_id"`  // Application ID
+	Date    int    `json:"date"`    // Date when message has been sent in Unixtime
+	ID      int    `json:"id"`      // Notification ID
+	Message string `json:"message"` // Message text
+	UserID  int    `json:"user_id"` // User ID
+}
+
+// SecureTokenChecked struct.
+type SecureTokenChecked struct {
+	Date    int `json:"date"`    // Date when access_token has been generated in Unixtime
+	Expire  int `json:"expire"`  // Date when access_token will expire in Unixtime
+	Success int `json:"success"` // Returns if successfully processed
+	UserID  int `json:"user_id"` // User ID
+}
+
+// SecureTransaction struct.
+type SecureTransaction struct {
+	Date    int `json:"date"`     // Transaction date in Unixtime
+	ID      int `json:"id"`       // Transaction ID
+	UIDFrom int `json:"uid_from"` // From ID
+	UIDTo   int `json:"uid_to"`   // To ID
+	Votes   int `json:"votes"`    // Votes number
+}