chore: Add pre-commit hook script

[irvinlim]

Adds a sample pre-commit Git hook for developers.

[codecov]

Codecov Report

Merging #94 (120432d) into main (a77a1c7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #94   +/-   ##
=======================================
  Coverage   63.35%   63.35%           
=======================================
  Files         203      203           
  Lines       10735    10735           
=======================================
  Hits         6801     6801           
  Misses       3571     3571           
  Partials      363      363           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a77a1c7...120432d. Read the comment docs.