Fixed #32559 -- Added 'step_size’ to numeric form fields.

Co-authored-by: Jacob Rief <jacob.rief@uibk.ac.at>

django/core/validators.py

@@ -1,4 +1,5 @@
 import ipaddress
+import math
 import re
 from pathlib import Path
 from urllib.parse import urlsplit, urlunsplit
@@ -401,6 +402,15 @@ class MinValueValidator(BaseValidator):
         return a < b
 
 
+@deconstructible
+class StepValueValidator(BaseValidator):
+    message = _("Ensure this value is a multiple of step size %(limit_value)s.")
+    code = "step_size"
+
+    def compare(self, a, b):
+        return not math.isclose(math.remainder(a, b), 0, abs_tol=1e-9)
+
+
 @deconstructible
 class MinLengthValidator(BaseValidator):
     message = ngettext_lazy(