Add new poll results models

[norkans7]

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[codecov-commenter]

Codecov Report

Merging #838 (edca080) into main (c1237e9) will increase coverage by 0.09%.
The diff coverage is 100.00%.

❗ Current head edca080 differs from pull request most recent head 35a65b9. Consider uploading reports for the commit 35a65b9 to get more accurate results

@@            Coverage Diff             @@
##             main     #838      +/-   ##
==========================================
+ Coverage   82.07%   82.17%   +0.09%     
==========================================
  Files          44       44              
  Lines        4799     4825      +26     
==========================================
+ Hits         3939     3965      +26     
  Misses        860      860              

Impacted Files	Coverage Δ
ureport/stats/models.py	36.98% <100.00%> (+3.25%)	⬆️

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