Added GET /health-check and related files

core/model/db/db.go

@@ -18,6 +18,7 @@ type Datastore interface {
 	PriceInterface
 	SessionInterface
 	ApiKeyInterface
+	SystemHealthInteface
 }
 
 func NewDB(dataSourceName string) (*DB, error) {

core/model/db/syshealth.go

@@ -0,0 +1,5 @@
+package db
+
+type SystemHealthInteface interface {
+	Ping() error
+}