Update api spec (#52)

* YOYO NEW API SPEC!

* I have generated the latest API!

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kittycad/models/unit_radioactivity_format.py

@@ -0,0 +1,10 @@
+from enum import Enum
+
+
+class UnitRadioactivityFormat(str, Enum):
+    BECQUEREL = 'becquerel'
+    CURIE = 'curie'
+    RUTHERFORD = 'rutherford'
+
+    def __str__(self) -> str:
+        return str(self.value)