Tp2000 1194 js linter

[a-gleeson]

TP2000-1194 JS linter and pre commit

Why

As we hae code formating and standardisation for pyhton code we should have similar set up for Javascript code.

What

• sets up an es lint configuration for JS, JSX and React
• pre commit for prettier and es lint

Checklist

• Requires dependency updates? - yes npm

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.11%. Comparing base (862d604) to head (35a1528).
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1185      +/-   ##
==========================================
- Coverage   93.11%   93.11%   -0.01%     
==========================================
  Files         582      582              
  Lines       43964    44041      +77     
  Branches     3170     3181      +11     
==========================================
+ Hits        40938    41008      +70     
- Misses       2412     2416       +4     
- Partials      614      617       +3     

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