refact: avoid importing python package neqsim

[asmfstatoil]

when python package neqsim is already installed in the same environment, "import neqsim" will import the python package and not the java package.

[asmfstatoil]

I have tested this locally and with neqsimpython with the main issue of duplicate module names (python package neqsim and java package neqsim) solved. In python package neqsim I still need to import this package with

from jneqsim import neqsim as jneqsim

to avoid collisions within the same package.