Implement the remaining Audit Logs functionality (#515)

* Add the rest of the Audit Logs implementation

* Replace asyncio.iscoroutinefunction with inspect

Starting in Python 3.14, use of `asyncio.iscoroutinefunction` emits a
deprecation warning (c.f. python/cpython#122858). The recommendation is
to use inspect.iscoroutinefunction instead.

* Use 'schema' field and handle pydantic's warning

* Test sync and async variants propertly

* it's in now

* feat(audit-logs): Add typed inputs for create_schema

Introduces TypedDict definitions for the simplified schema input format:
- AuditLogSchemaTargetInput for target definitions
- AuditLogSchemaActorInput for actor definitions
- MetadataSchemaInput for metadata field type mappings

Also adds serialize_schema_options() to transform the simplified format
(e.g., {"status": "string"}) to the full JSON Schema format expected
by the API.

* refactor(audit-logs): Use typed inputs in create_schema

Replaces generic Mapping[str, Any] parameters with the new typed inputs.
Uses shared serialize_schema_options() function instead of inline JSON
building, reducing duplication between sync and async implementations.

* fix(audit-logs): Make optional fields nullable in response models

The API can return null for actor in AuditLogSchema (when no custom
metadata defined) and for retention_period_in_days in AuditLogRetention
(when not configured). Updated models to accept None.

* test(audit-logs): Update tests for simplified input format

Updates create_schema tests to use the new simplified input format and
verifies the serialization to full JSON Schema format. Adds edge case
tests for nullable fields (actor in schema, retention_period_in_days).

---------

Co-authored-by: Garen Torikian <gjtorikian@users.noreply.github.com>

Author: birdcar

src/workos/async_client.py

@@ -2,7 +2,7 @@
 from importlib.metadata import version
 from workos._base_client import BaseClient
 from workos.api_keys import AsyncApiKeys
-from workos.audit_logs import AuditLogsModule
+from workos.audit_logs import AsyncAuditLogs
 from workos.directory_sync import AsyncDirectorySync
 from workos.events import AsyncEvents
 from workos.fga import FGAModule
@@ -64,10 +64,10 @@ def sso(self) -> AsyncSSO:
         return self._sso
 
     @property
-    def audit_logs(self) -> AuditLogsModule:
-        raise NotImplementedError(
-            "Audit logs APIs are not yet supported in the async client."
-        )
+    def audit_logs(self) -> AsyncAuditLogs:
+        if not getattr(self, "_audit_logs", None):
+            self._audit_logs = AsyncAuditLogs(self._http_client)
+        return self._audit_logs
 
     @property
     def directory_sync(self) -> AsyncDirectorySync: