feat: Handle polka previous and commit quorum decisions

[ancazamfir]

Closes #77

• Tests are failing here, fixes are in Fix the new tests for proposal after polka and quorum  #86

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (a755b7b) 87.16% compared to head (f931aa9) 95.08%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
Code/driver/src/driver.rs	95.45%	3 Missing ⚠️
Code/test/src/utils.rs	99.39%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
+ Coverage   87.16%   95.08%   +7.92%     
==========================================
  Files          29       30       +1     
  Lines        1371     1728     +357     
==========================================
+ Hits         1195     1643     +448     
+ Misses        176       85      -91     

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