Add __init__.py to configs/ folder

[ashleve]

What does this PR do?

Adds __init__.py to configs/ folder in order to make configs available after installing project as a package.

Also adds example global commands available in the terminal to setup.py

Fix #525

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[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (dev@82f31b9). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

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  Coverage       ?   83.71%           
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  Files          ?        9           
  Lines          ?      350           
  Branches       ?        0           
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  Hits           ?      293           
  Misses         ?       57           
  Partials       ?        0           

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