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/search.go

@@ -0,0 +1,17 @@
+package api // import "github.com/SevereCloud/vksdk/v2/api"
+
+import "github.com/SevereCloud/vksdk/v2/object"
+
+// SearchGetHintsResponse struct.
+type SearchGetHintsResponse struct {
+	Count int                 `json:"count"`
+	Items []object.SearchHint `json:"items"`
+}
+
+// SearchGetHints allows the programmer to do a quick search for any substring.
+//
+// https://vk.com/dev/search.getHints
+func (vk *VK) SearchGetHints(params Params) (response SearchGetHintsResponse, err error) {
+	err = vk.RequestUnmarshal("search.getHints", &response, params)
+	return
+}