perf: ⚡️ Optimize query for saving of increased and decreased hits

[abhiabhi94]

No description provided.

[codecov-commenter]

Codecov Report

Merging #10 (2d0e40d) into main (84164ee) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #10   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines          499       499           
  Branches        42        42           
=========================================
  Hits           499       499           

Impacted Files	Coverage Δ
hitcount/models/hits.py	100.00% <100.00%> (ø)

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