[Optimization] Convert the TQ Storage initialization code to a registration mechanism.

## Background

I found @0oshowero0's comments in function `_maybe_create_tq_storage`, and I quite agree with this approach.

```python
# TODO(hz): Adopt registry pattern to manage storage backends for better scalability.
def _maybe_create_tq_storage(conf: DictConfig) -> DictConfig:
```

So I am planning to refact this code
