Implement mobile auth method

[bendikrb]

Refactor from #7 (thanks @mathiazom)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 84.80243% with 50 lines in your changes missing coverage. Please review.

Project coverage is 86.85%. Comparing base (546b54c) to head (cc456ca).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
podme_api/client.py	57.47%	36 Missing and 1 partial ⚠️
podme_api/auth/common.py	68.00%	6 Missing and 2 partials ⚠️
tests/test_client.py	89.36%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master       #8       +/-   ##
===========================================
- Coverage   99.73%   86.85%   -12.88%     
===========================================
  Files          16       16               
  Lines        1497     1598      +101     
  Branches      114       96       -18     
===========================================
- Hits         1493     1388      -105     
- Misses          0      195      +195     
- Partials        4       15       +11     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.