Support batch override

[nrbnlulu]

def test_override_batch() -> None:
    container = Container()
    container.register(Object(0))
    container.register(Object("barfoo"))

    with container.override_batch(
        Object(1),
        Object("foobar"),
    ), container.sync_context() as ctx:
        assert ctx.resolve(int) == 1
        assert ctx.resolve(str) == "foobar"

    with container.sync_context() as ctx:
        assert ctx.resolve(int) == 0
        assert ctx.resolve(str) == "barfoo"