Fix annotations

Fix annotations

Typing improvements:

* :class:`.CursorResult` is returned for some forms of
:meth:`_orm.Session.execute` where DML without RETURNING is used
* fixed type for :paramref:`_orm.Query.with_for_update.of` parameter within
:meth:`_orm.Query.with_for_update`
* improvements to ``_DMLColumnArgument`` type used by some DML methods to
pass column expressions
* Add overload to :func:`_sql.literal` so that it is inferred that the
return type is ``BindParameter[NullType]`` where
:paramref:`_sql.literal.type_` param is None
* Add overloads to :meth:`_sql.ColumnElement.op` so that the inferred
type when :paramref:`_sql.ColumnElement.op.return_type` is not provided
is ``Callable[[Any], BinaryExpression[Any]]``
* Add missing overload to :meth:`_sql.ColumnElement.__add__`

Pull request courtesy Mehdi Gmira.

Fixes: #9185
Closes: #10108
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/10108
Pull-request-sha: 6017526c9cd1282025885cb002de1f984f64205b

Change-Id: I77a2a199b7a8b137b405001bef8813cf2d327bca