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/streaming.go

@@ -0,0 +1,67 @@
+package api // import "github.com/SevereCloud/vksdk/v2/api"
+
+// StreamingGetServerURLResponse struct.
+type StreamingGetServerURLResponse struct {
+	Endpoint string `json:"endpoint"`
+	Key      string `json:"key"`
+}
+
+// StreamingGetServerURL allows to receive data for the connection to Streaming API.
+//
+// https://vk.com/dev/streaming.getServerUrl
+func (vk *VK) StreamingGetServerURL(params Params) (response StreamingGetServerURLResponse, err error) {
+	err = vk.RequestUnmarshal("streaming.getServerUrl", &response, params)
+	return
+}
+
+// StreamingGetSettingsResponse struct.
+type StreamingGetSettingsResponse struct {
+	MonthlyLimit string `json:"monthly_limit"`
+}
+
+// StreamingGetSettings allows to receive monthly tier for Streaming API.
+//
+// https://vk.com/dev/streaming.getSettings
+func (vk *VK) StreamingGetSettings(params Params) (response StreamingGetSettingsResponse, err error) {
+	err = vk.RequestUnmarshal("streaming.getSettings", &response, params)
+	return
+}
+
+// StreamingGetStatsResponse struct.
+type StreamingGetStatsResponse []struct {
+	EventType string `json:"event_type"`
+	Stats     []struct {
+		Timestamp int `json:"timestamp"`
+		Value     int `json:"value"`
+	} `json:"stats"`
+}
+
+// StreamingGetStats allows to receive statistics for prepared and received events in Streaming API.
+//
+// https://vk.com/dev/streaming.getStats
+func (vk *VK) StreamingGetStats(params Params) (response StreamingGetStatsResponse, err error) {
+	err = vk.RequestUnmarshal("streaming.getStats", &response, params)
+	return
+}
+
+// StreamingGetStemResponse struct.
+type StreamingGetStemResponse struct {
+	Stem string `json:"stem"`
+}
+
+// StreamingGetStem allows to receive the stem of the word.
+//
+// https://vk.com/dev/streaming.getStem
+func (vk *VK) StreamingGetStem(params Params) (response StreamingGetStemResponse, err error) {
+	err = vk.RequestUnmarshal("streaming.getStem", &response, params)
+	return
+}
+
+// StreamingSetSettings allows to set monthly tier for Streaming API.
+//
+// https://vk.com/dev/streaming.setSettings
+func (vk *VK) StreamingSetSettings(params Params) (response int, err error) {
+	err = vk.RequestUnmarshal("streaming.setSettings", &response, params)
+
+	return
+}