Make code upto date with latest version of scrapy

[rabinadk1]

• Use Item instead of BaseItem since it's deprecated in favor of the prior
• Bump minimum python version to 3.6 due to the use of f-strings
• Blacked the code to make it look good
• Added typings to the code to make it easier to debug

[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (master@aea3c34). Click here to learn what that means. The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #36   +/-   ##
=========================================
  Coverage          ?   94.20%           
=========================================
  Files             ?        2           
  Lines             ?       69           
  Branches          ?        9           
=========================================
  Hits              ?       65           
  Misses            ?        1           
  Partials          ?        3           

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