Deprecate LM_ suffix in Python bindings

[rdbo]

libmem.LM_EnumProcess feels verbose for Python.
Instead, something like this: libmem.enum_processes would be more welcome

[rdbo]

If this will be done, it should happen post 5.0
It should come with a redesign of the Python bindings, with a clear line separating the C layer from the Python layer, just like Rust.
In Rust, there is libmem-sys, which is a barebones libmem wrapper, and libmem, which is a rusty libmem port.
In Python, the C is slightly overlapping with the Python layer, so it should be rethought.
Also, perhaps the Python layer should be implemented in pure Python only, it would make it easier to embed it with something like rustpython as far as I understand.

[rdbo]

Partially done