Eslint setup

[rav1kantsingh]

#62
For review by @cereallarceny

[cereallarceny]

@IamRavikantSingh A few initial questions I have. Also, this doesn't actually run ESLint as part of the watch or build commands in package.json. Please ensure that ESLint is actually running via the CLI commands and not via your code editor.

[codecov]

Codecov Report

Merging #102 into master will decrease coverage by 13.48%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #102       +/-   ##
===========================================
- Coverage   85.97%   72.48%   -13.49%     
===========================================
  Files          18       18               
  Lines         556      556               
  Branches       80       80               
===========================================
- Hits          478      403       -75     
- Misses         67      123       +56     
- Partials       11       30       +19

Impacted Files	Coverage Δ
src/types/message.js	23.52% <0%> (-60.79%)	⬇️
src/types/protocol.js	50% <0%> (-50%)	⬇️
src/syft.js	18.47% <0%> (-29.35%)	⬇️
src/types/plan.js	68.18% <0%> (-27.28%)	⬇️
src/protobuf/index.js	72% <0%> (-20%)	⬇️
src/types/placeholder.js	90% <0%> (-10%)	⬇️

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