[Feature Request] Align Mojo `alias` with `type`

[redradist]

Review Mojo's priorities

• [X] I have read the roadmap and priorities and I believe this request falls within the priorities.

What is your request?

In Python 3.12, there is a new use of type keyword, Type Aliases. I suggest to align alias keyword with type in favor of type in Python

What is your motivation for this change?

Make better interchangeable between Python and Mojo code

Any other details?

No response

[martinvuyk]

The problem is that this would conflict with alias being used to setup compile time constants as well, not just types.

[Mogball]

alias is the more general names of the two. It could be confusing, for example, to write type g = 123 (even though Python allows using ints as types, linters aside)