Add db_table_comment to model meta (#2571)

From django/django@78f163a:

* `django.db.models.options.Options.db_table_comment` added

Author: ngnpope

django-stubs/db/models/options.pyi

@@ -51,6 +51,7 @@ class Options(Generic[_M]):
     verbose_name: _StrOrPromise | None
     verbose_name_plural: _StrOrPromise | None
     db_table: str
+    db_table_comment: str
     ordering: Sequence[str] | None
     indexes: list[Any]
     unique_together: Sequence[tuple[str, ...]]  # Are always normalized