switch to pydantic

Signed-off-by: Jess Frazelle <github@jessfraz.com>

kittycad/models/uuid_binary.py

@@ -1,3 +1,22 @@
+from typing import Any
+
+from pydantic import GetCoreSchemaHandler
+from pydantic_core import CoreSchema, core_schema
+
+
 class UuidBinary(str):
+    """A uuid stored as binary(16).
+
+    Mysql binary(16) storage for UUIDs. Uses Version 7 UUID by default, a universally unique identifier that is generated using random numbers and a timestamp. UUIDv7 are recommended for database ids/primary keys because they are sequential and this helps with efficient indexing, especially on MySQL. For other uses cases, like API tokens, UUIDv4 makes more sense because it's completely random.
+
+    However, both should be stored as binary on MySQL! Both versions use the same data format, so they can be used interchangeably with this data type.
+    """
+
     def __str__(self) -> str:
         return self
+
+    @classmethod
+    def __get_pydantic_core_schema__(
+        cls, source_type: Any, handler: GetCoreSchemaHandler
+    ) -> CoreSchema:
+        return core_schema.no_info_after_validator_function(cls, handler(str))