Add logo to status badge with my l33t svg skillz

[econchick]

Description

Addresses #48 to add ridiculously cute sloth logo to the status badge :D

Have you tested this? If so, how?

Checklist for PR author(s)

• [ ] Changes are covered by unit tests (no major decrease in code coverage %).
• [ ] All tests pass.
• [ ] Docstring coverage is 100% via tox -e docs or interrogate -c pyproject.toml (I mean, we should set a good example :smile:).
• [ ] Updates to documentation:
  • [ ] Document any relevant additions/changes in README.rst.
  • [ ] Manually update both the README.rst and docs/index.rst for any new/changed CLI flags.
  • [ ] Any changed/added classes/methods/functions have appropriate versionadded, versionchanged, or deprecated directives. Find the appropriate next version in the project's __init__.py file.

Release note

[codecov[bot]]

Codecov Report

Merging #49 into master will decrease coverage by 0.27%. The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master      #49      +/-   ##
==========================================
- Coverage   98.07%   97.79%   -0.28%     
==========================================
  Files           7        7              
  Lines         675      680       +5     
  Branches      155      157       +2     
==========================================
+ Hits          662      665       +3     
- Misses          3        4       +1     
- Partials       10       11       +1     

Impacted Files	Coverage Δ
src/interrogate/badge_gen.py	96.07% <66.66%> (-3.93%)	:arrow_down:

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