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/database.go

@@ -0,0 +1,50 @@
+package object // import "github.com/SevereCloud/vksdk/v2/object"
+
+// DatabaseCity struct.
+type DatabaseCity struct {
+	ID        int         `json:"id"`    // City ID
+	Title     string      `json:"title"` // City title
+	Area      string      `json:"area"`
+	Region    string      `json:"region"`
+	Important BaseBoolInt `json:"important"`
+}
+
+// DatabaseMetroStation  struct.
+type DatabaseMetroStation struct {
+	ID     int    `json:"id"`      // Metro station ID
+	Name   string `json:"name"`    // Metro station name
+	Color  string `json:"color"`   // Metro station color
+	CityID int    `json:"city_id"` // Metro station city ID
+}
+
+// DatabaseFaculty struct.
+type DatabaseFaculty struct {
+	ID    int    `json:"id"`    // Faculty ID
+	Title string `json:"title"` // Faculty title
+}
+
+// DatabaseRegion struct.
+type DatabaseRegion struct {
+	ID    int    `json:"id"`    // Region ID
+	Title string `json:"title"` // Region title
+}
+
+// DatabaseSchool struct.
+type DatabaseSchool struct {
+	ID    int    `json:"id"`    // School ID
+	Title string `json:"title"` // School title
+}
+
+// DatabaseStation struct.
+type DatabaseStation struct {
+	CityID int    `json:"city_id"` // City ID
+	Color  string `json:"color"`   // Hex color code without #
+	ID     int    `json:"id"`      // Station ID
+	Name   string `json:"name"`    // Station name
+}
+
+// DatabaseUniversity struct.
+type DatabaseUniversity struct {
+	ID    int    `json:"id"`    // University ID
+	Title string `json:"title"` // University title
+}