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/api/notifications.go

@@ -0,0 +1,54 @@
+package api // import "github.com/SevereCloud/vksdk/v2/api"
+
+import (
+	"github.com/SevereCloud/vksdk/v2/object"
+)
+
+// NotificationsGetResponse struct.
+type NotificationsGetResponse struct {
+	Count      int                                `json:"count"`
+	Items      []object.NotificationsNotification `json:"items"`
+	Profiles   []object.UsersUser                 `json:"profiles"`
+	Groups     []object.GroupsGroup               `json:"groups"`
+	Photos     []object.PhotosPhoto               `json:"photos"`
+	Videos     []object.VideoVideo                `json:"videos"`
+	Apps       []object.AppsApp                   `json:"apps"`
+	LastViewed int                                `json:"last_viewed"`
+	NextFrom   string                             `json:"next_from"`
+	TTL        int                                `json:"ttl"`
+}
+
+// NotificationsGet returns a list of notifications about other users' feedback to the current user's wall posts.
+//
+// https://vk.com/dev/notifications.get
+func (vk *VK) NotificationsGet(params Params) (response NotificationsGetResponse, err error) {
+	err = vk.RequestUnmarshal("notifications.get", &response, params)
+	return
+}
+
+// NotificationsMarkAsViewed resets the counter of new notifications
+// about other users' feedback to the current user's wall posts.
+//
+// https://vk.com/dev/notifications.markAsViewed
+func (vk *VK) NotificationsMarkAsViewed(params Params) (response int, err error) {
+	err = vk.RequestUnmarshal("notifications.markAsViewed", &response, params)
+	return
+}
+
+// NotificationsSendMessageResponse struct.
+type NotificationsSendMessageResponse []struct {
+	UserID int                `json:"user_id"`
+	Status object.BaseBoolInt `json:"status"`
+	Error  struct {
+		Code        int    `json:"code"`
+		Description string `json:"description"`
+	} `json:"error"`
+}
+
+// NotificationsSendMessage sends notification to the VK Apps user.
+//
+// https://vk.com/dev/notifications.sendMessage
+func (vk *VK) NotificationsSendMessage(params Params) (response NotificationsSendMessageResponse, err error) {
+	err = vk.RequestUnmarshal("notifications.sendMessage", &response, params)
+	return
+}