Implemented CLI framework and pOc tests.

[ivanklee86]

Description

Please include a summary of the change and which issue is fixed (if any).

• Implemented CLI framework w/lazily-loaded plugins based on click/examples/complex
• Added e2e tests

Fixes #4

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.

• Unit tests
• Integration tests
• Manual tests

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[coveralls]

Pull Request Test Coverage Report for Build 14

• 36 of 47 (76.6%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 76.596%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
envadmin/cli.py	29	40	72.5%

Totals
Change from base Build 7:	0.0%
Covered Lines:	36
Relevant Lines:	47

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💛 - Coveralls