MQ constants in one namespace

[JochemGit]

As discussed in this issue I created a file mqconstants.py to provide all MQ constants in namespace pymqi.mqconstants.
Additionally I added an import in __init__.py. It works for me. It should not affect anything else.

[AlexandreYang]

I just wanted to rename that module to const or mqconst from mqconstants, otherwise, it looks good to me.

From: https://github.com/dsuch/pymqi/issues/204#issuecomment-649025659

@dsuch @JochemGit Shall we just import all the constants in __init__.py directly, it seems there is no risk of collision. That will avoid some typing.

[dsuch]

I would rather keep them separate - this will amount to hundreds of names in the namespace, making code completion more cumbersome.

[JochemGit]

Do it as @dsuch likes it. I am fine with it.

[AlexandreYang]

@JochemGit Do you mind making the change mqconstants to const ?

[JochemGit]

@AlexandreYang I chose the name in analogy to the java class MQConstants, which implements the interfaces CMQC, CMQCFC, CMQXC, CMQZC and some others.
Why don't you like it?

[dsuch]

Dear PyMQI champions, I ask, let it be const without discussing it further - there is no real difference between all these names, I just chose it in compliance with my own programming conventions. Thanks a lot.

[AlexandreYang]

Looks good to me. It will be indeed more convenient to use constants within a single namespace.

[dsuch]

@AlexandreYang There is nothing that I can think of to prevent a new release, I will do it soon.

[AlexandreYang]

Thanks.