Support for GET /events endpoint

[henrylamchan]

• Refactor capture_and_mock_requests
• Add Resource base class
• Add WorkOSEvent and WorkOSEventAction Resources
• Add support for GET /events endpoint

[codecov]

Codecov Report

Merging #33 into master will decrease coverage by 3.60%.
The diff coverage is 86.30%.

@@            Coverage Diff             @@
##           master      #33      +/-   ##
==========================================
- Coverage   97.14%   93.53%   -3.61%     
==========================================
  Files           9       12       +3     
  Lines         175      232      +57     
==========================================
+ Hits          170      217      +47     
- Misses          5       15      +10     

Impacted Files	Coverage Δ
workos/audit_trail.py	82.14% <75.60%> (-17.86%)	⬇️
workos/__about__.py	100.00% <100.00%> (ø)
workos/resources/base.py	100.00% <100.00%> (ø)
workos/resources/event.py	100.00% <100.00%> (ø)
workos/resources/event_action.py	100.00% <100.00%> (ø)
workos/resources/sso.py	100.00% <100.00%> (ø)

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