Add pre commit rules

[codecov[bot]]

Codecov Report

Merging #42 (37c25f0) into master (f829961) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #42   +/-   ##
=======================================
  Coverage   97.87%   97.87%           
=======================================
  Files           1        1           
  Lines         329      330    +1     
  Branches       83       83           
=======================================
+ Hits          322      323    +1     
  Misses          4        4           
  Partials        3        3           

Files Changed	Coverage Δ
src/protego.py	97.87% <100.00%> (+<0.01%)	:arrow_up:

[VMRuiz]

Needs to wait until https://github.com/scrapy/protego/pull/38 is merged