Added Config for custom driver (specifically libSQL) (#185)

* added config for custom driver

* fix error handling and tests failing

sqlite.go

@@ -24,10 +24,20 @@ type Dialector struct {
 	Conn       gorm.ConnPool
 }
 
+type Config struct {
+	DriverName string
+	DSN        string
+	Conn       gorm.ConnPool
+}
+
 func Open(dsn string) gorm.Dialector {
 	return &Dialector{DSN: dsn}
 }
 
+func New(config Config) gorm.Dialector {
+	return &Dialector{DSN: config.DSN, DriverName: config.DriverName, Conn: config.Conn}
+}
+
 func (dialector Dialector) Name() string {
 	return "sqlite"
 }