CI: Run prettier

[0xPoe]

ref: #7336 (comment)

Description

This pull request adds a new action to run pnpm prettier command to help us prevent unformatted files get into the codebase.

Explanation of Changes

1. Added pnpm prettier as a action.
2. Formated all files.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a477e42) 87.56% compared to head (27b4991) 87.57%.
Report is 22 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8140   +/-   ##
=======================================
  Coverage   87.56%   87.57%           
=======================================
  Files         271      271           
  Lines       26785    26785           
=======================================
+ Hits        23455    23457    +2     
+ Misses       3330     3328    -2     

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