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/leads.go

@@ -0,0 +1,55 @@
+package object // import "github.com/SevereCloud/vksdk/v2/object"
+
+// LeadsChecked struct.
+type LeadsChecked struct {
+	Reason    string `json:"reason"` // Reason why user can't start the lead
+	Result    string `json:"result"`
+	Sid       string `json:"sid"`        // Session ID
+	StartLink string `json:"start_link"` // URL user should open to start the lead
+}
+
+// LeadsComplete struct.
+type LeadsComplete struct {
+	Cost     int         `json:"cost"`  // Offer cost
+	Limit    int         `json:"limit"` // Offer limit
+	Spent    int         `json:"spent"` // Amount of spent votes
+	Success  BaseBoolInt `json:"success"`
+	TestMode BaseBoolInt `json:"test_mode"` // Information whether test mode is enabled
+}
+
+// LeadsEntry struct.
+type LeadsEntry struct {
+	Aid       int         `json:"aid"`        // Application ID
+	Comment   string      `json:"comment"`    // Comment text
+	Date      int         `json:"date"`       // Date when the action has been started in Unixtime
+	Sid       string      `json:"sid"`        // Session string ID
+	StartDate int         `json:"start_date"` // Start date in Unixtime (for status=2)
+	Status    int         `json:"status"`     // Action type
+	TestMode  BaseBoolInt `json:"test_mode"`  // Information whether test mode is enabled
+	UID       int         `json:"uid"`        // User ID
+}
+
+// LeadsLead struct.
+type LeadsLead struct {
+	Completed   int           `json:"completed"` // Completed offers number
+	Cost        int           `json:"cost"`      // Offer cost
+	Days        LeadsLeadDays `json:"days"`
+	Impressions int           `json:"impressions"` // Impressions number
+	Limit       int           `json:"limit"`       // Lead limit
+	Spent       int           `json:"spent"`       // Amount of spent votes
+	Started     int           `json:"started"`     // Started offers number
+}
+
+// LeadsLeadDays struct.
+type LeadsLeadDays struct {
+	Completed   int `json:"completed"`   // Completed offers number
+	Impressions int `json:"impressions"` // Impressions number
+	Spent       int `json:"spent"`       // Amount of spent votes
+	Started     int `json:"started"`     // Started offers number
+}
+
+// LeadsStart struct.
+type LeadsStart struct {
+	TestMode BaseBoolInt `json:"test_mode"` // Information whether test mode is enabled
+	VkSid    string      `json:"vk_sid"`    // Session data
+}