- `aesara.tensor.basic_opt` has been changed to `aesara.tensor.rewriting.basic`
- `aesara.tensor.math_opt` has been changed to `aesara.tensor.rewriting.math`
- `aesara.tensor.subtensor_opt` has been changed to `aesara.tensor.rewriting.subtensor`
- `aesara.tensor.opt_uncanonicalize` has been changed to `aesara.tensor.rewriting.uncanonicalize`

The tests associated with each module have been updated accordingly.

- `aesara.graph.opt` has been changed to `aesara.graph.rewriting.basic`
- `aesara.graph.opt_utils` has been changed to `aesara.graph.rewriting.utils`
- `aesara.graph.optdb` has been changed to `aesara.graph.rewriting.db`
- `aesara.graph.unify` has been changed to `aesara.graph.rewriting.unify`
- `aesara.graph.kanren` has been changed to `aesara.graph.rewriting.kanren`

The tests associated with each module have been updated accordingly.

This commit introduces the use of module-level `__getattr__` overrides to emit
deprecation warnings for renamed objects.  It also adds some missing
`pytest.deprecated_call` checks.