[REFACTOR][IR] Streamline ir/op Registry (#5609)

[REFACTOR][IR] Streamline ir/op Registry (#5609)

* [REFACTOR][IR] Streamline ir/op Registry

This PR refactors the attrregistry mechanism in the ir/op into
a separate common base. The common base will provide a foundation
for other attr related registries such as target and pass.

We also streamlines the terminology of the registry API.

- Use AttrMap for the column maps returned by the registry
- Use RegEntry to refer to the registry entry.

* Address review comments