add session struct

modules/structs/session.go

@@ -0,0 +1,14 @@
+package structs
+
+import "time"
+
+// User represents a session
+// swagger:model
+type Session struct {
+	UserId    string
+	SessionId string
+	IP        string
+	UserAgent string
+	LastLogin time.Time
+	Expires   time.Time
+}