Handle printing of logical types in the LLVM backend

[namannimmo10]

fixes #322

[czgdp1807]

I reviewed. Thanks for requesting review.

[Smit-create]

I think this is already fixed in main.

print(True, False)

Gives,

1 0

Handling booleans as integers in the LLVM backend is good in my opinion because ASR is language independent and the LLVM backend is used for different frontend languages, we might have some confits in printing booleans explicitly like "True" in some front-end languages and "true" in some others.

[certik]

The issue is that LPython should print it like CPython does, and LFortran like other Fortran compilers do. But this can be easily configurable, say as an option to asr_to_llvm, so not a big deal in practice.

[namannimmo10]

I am sorry for the long delay in addressing the comments.

Note that this is ready for the Python frontend for now. We have to think of a way to make this work for LFortran, too.

[certik]

I think this works. Thanks!