feat(spectypes): ✨ enhance SqlNull to support float and int types

* Add handling for float32 and float64 in Scan method.
* Implement parsing for integer types in Scan and FromString methods.
* Improve flexibility of SqlNull for various numeric inputs.

pkg/spectypes/sql_types.go

@@ -74,6 +74,10 @@ func (n *SqlNull[T]) Scan(value any) error {
 		return n.FromString(v)
 	case []byte:
 		return n.FromString(string(v))
+	case float32, float64:
+		return n.FromString(fmt.Sprintf("%f", value))
+	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
+		return n.FromString(fmt.Sprintf("%d", value))
 	default:
 		return n.FromString(fmt.Sprintf("%v", value))
 	}
@@ -94,6 +98,10 @@ func (n *SqlNull[T]) FromString(s string) error {
 			reflect.ValueOf(&n.Val).Elem().SetInt(i)
 			n.Valid = true
 		}
+		if f, err := strconv.ParseFloat(s, 64); err == nil {
+			reflect.ValueOf(&n.Val).Elem().SetInt(int64(f))
+			n.Valid = true
+		}
 	case float32, float64:
 		if f, err := strconv.ParseFloat(s, 64); err == nil {
 			reflect.ValueOf(&n.Val).Elem().SetFloat(f)