Implement a Redis Delayed Queue to support sorted sets

[toluaina]

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 50.00000% with 43 lines in your changes missing coverage. Please review.

Project coverage is 81.57%. Comparing base (c3303f2) to head (0f6d8a6).

Files with missing lines	Patch %	Lines
pgsync/sync.py	34.84%	43 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #599      +/-   ##
==========================================
- Coverage   81.94%   81.57%   -0.38%     
==========================================
  Files          16       16              
  Lines        2703     2746      +43     
==========================================
+ Hits         2215     2240      +25     
- Misses        488      506      +18     

Flag	Coverage Δ
unittests	81.57% <50.00%> (-0.38%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

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