feat: uwsgi log var mapper + uwsgi test helper

As per the commit log:

```
    feat: uwsgi logvar mapper
    
    This patchset adds middleware to capture information from the WSGI
    environment and log it using uwsgi.
    
    Given the specific nature of this module and the size of the uwsgi
    dependency, the decision was made to not include uwsgi in the
    requirements file. The current solution is to separate all
    uwsgi-dependent modules into an eom/uwsgi directory, and have an
    import-time guard in the __init__ file that advises users
    appropriately.
    
    A simple unit test was added to test the guard functionality.
    
    Due to the nature of the mapper module, a trivial unit test was
    added. A functional test should be added in the future that spins up a
    uwsgi process and verifies that the expected logging is performed.
```