lot of new functionalities

core/utils/form-validators/phone-numbers.go

@@ -0,0 +1,15 @@
+package formvalidators
+
+import (
+	"regexp"
+
+	"github.com/go-playground/validator/v10"
+)
+
+const phoneNumberRegexStreing = "^((\\+)33|0)[1-9](\\d{2}){4}$"
+
+var phoneNumberRegex = regexp.MustCompile(phoneNumberRegexStreing)
+
+func PhoneNumber(fl validator.FieldLevel) bool {
+	return phoneNumberRegex.MatchString(fl.Field().String())
+}