Export Operator types from @casekit/orm (#348)

Re-export OperatorDefinition and OperatorDefinitions types from
@casekit/orm-schema to make it easier to define custom operators.

Closes #347

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: rsslldnphy

packages/orm/src/index.ts

@@ -10,6 +10,8 @@ export type {
     ModelDefinition,
     ModelDefinitions,
     ModelType,
+    OperatorDefinition,
+    OperatorDefinitions,
     PostgresDataTypes,
     RelationDefinition,
     UniqueConstraintDefinition,