breaking: @cordova/eslint-config w/ applied fix

[NiklasMerz]

Platforms affected

OSX

Motivation and Context

Use consistent eslint rules with other projects

Description

Add Cordova eslint config and fixed lint warnings

Please check eslint config and command. I am not an expert with this

Closes #64

Testing

npm test and CI

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[codecov-commenter]

Codecov Report

Merging #101 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #101   +/-   ##
=======================================
  Coverage   39.34%   39.34%           
=======================================
  Files           5        5           
  Lines         427      427           
=======================================
  Hits          168      168           
  Misses        259      259           

Impacted Files	Coverage Δ
...ates/scripts/cordova/lib/plugman/pluginHandlers.js	6.62% <ø> (ø)
bin/lib/create.js	76.59% <100.00%> (ø)

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[NiklasMerz]

new changes LGTM 👍

[timbru31]

Part of apache/cordova#142, too