Add 'packaging' module to aviary installation requirements and or documentation

[cmbenne3]

Description

When installing aviary into a new anaconda environment the following error occurs:

"ModuleNotFoundError: No module named 'packaging'.

The user can manually install the additional module by running:

"pip install packaging"

We should either automate this by adding a new dependency, or add documentation that the user might need to do this.

Example

Command run:

pip install -e .

Result:

Aviary Version

0.9.4.dev

Relevant environment information

No response