added validation condtion enum

gspread/utils.py

@@ -118,6 +118,43 @@ class GridRangeType(StrEnum):
     ListOfLists = "ListOfLists"
 
 
+class ValidationConditionType(StrEnum):
+    number_greater="NUMBER_GREATER"
+    number_greater_than_eq="NUMBER_GREATER_THAN_EQ"
+    number_less="NUMBER_LESS"
+    number_less_than_eq="NUMBER_LESS_THAN_EQ"
+    number_eq="NUMBER_EQ"
+    number_not_eq="NUMBER_NOT_EQ"
+    number_between="NUMBER_BETWEEN"
+    number_not_between="NUMBER_NOT_BETWEEN"
+    text_contains="TEXT_CONTAINS"
+    text_not_contains="TEXT_NOT_CONTAINS"
+    text_starts_with="TEXT_STARTS_WITH"
+    text_ends_with="TEXT_ENDS_WITH"
+    text_eq="TEXT_EQ"
+    text_is_email="TEXT_IS_EMAIL"
+    text_is_url="TEXT_IS_URL"
+    date_eq="DATE_EQ"
+    date_before="DATE_BEFORE"
+    date_after="DATE_AFTER"
+    date_on_or_before="DATE_ON_OR_BEFORE"
+    date_on_or_after="DATE_ON_OR_AFTER"
+    date_between="DATE_BETWEEN"
+    date_not_between="DATE_NOT_BETWEEN"
+    date_is_valid="DATE_IS_VALID"
+    one_of_range="ONE_OF_RANGE"
+    one_of_list="ONE_OF_LIST"
+    blank="BLANK"
+    not_blank="NOT_BLANK"
+    custom_formula="CUSTOM_FORMULA"
+    boolean="BOOLEAN"
+    text_not_eq="TEXT_NOT_EQ"
+    date_not_eq="DATE_NOT_EQ"
+    filter_expression="FILTER_EXPRESSION"    
+
+
+
+
 def convert_credentials(credentials: Credentials) -> Credentials:
     module = credentials.__module__
     cls = credentials.__class__.__name__