Add eslint for code linting

[niley7464]

This PR adds eslint config and applies it.

[taos-ci]

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[niley7464]

nnstreamer-example/Tizen.web/ImageClassificationOffloading/js/main.js
   83:24  error  'tizen' is not defined              no-undef
   91:17  error  'tizen' is not defined              no-undef
  113:22  error  'tizen' is not defined              no-undef
  133:15  error  'tizen' is not defined              no-undef
  136:23  error  'tizen' is not defined              no-undef
  195:9   error  'tizen' is not defined              no-undef
  196:16  error  'ignore' is defined but never used  no-unused-vars
  196:24  error  Empty block statement               no-empty

nnstreamer-example/Tizen.web/ImageClassificationOffloading/js/utils.js
  15:32  error  'reject' is defined but never used  no-unused-vars
  16:5   error  'tizen' is not defined              no-undef
  28:32  error  'reject' is defined but never used  no-unused-vars
  29:5   error  'tizen' is not defined              no-undef
  71:19  error  'tizen' is not defined              no-undef

nnstreamer-example/Tizen.web/ImageClassificationPipeline/js/main.js
   56:17  error  'tizen' is not defined              no-undef
   70:22  error  'tizen' is not defined              no-undef
   85:17  error  'tizen' is not defined              no-undef
  109:9   error  'tizen' is not defined              no-undef
  110:16  error  'ignore' is defined but never used  no-unused-vars
  110:24  error  Empty block statement               no-empty
  121:21  error  'tizen' is not defined              no-undef
  126:29  error  'tizen' is not defined              no-undef

nnstreamer-example/Tizen.web/ImageClassificationSingleShot/js/main.js
   56:17  error  'tizen' is not defined              no-undef
   71:15  error  'tizen' is not defined              no-undef
   88:9   error  'tizen' is not defined              no-undef
   89:16  error  'ignore' is defined but never used  no-unused-vars
   89:24  error  Empty block statement               no-empty
  100:29  error  'tizen' is not defined              no-undef

There are lots of error left which could not fixed by --fix option.
I just used recommended configs, so we need to set specific option for Tizen.web too.

[taos-ci]

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[taos-ci]

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[myungjoo]

Really need this file added?

[niley7464]

https://medium.com/@InspireTech/should-i-add-package-lock-json-to-git-why-is-it-important-to-commit-package-lock-json-into-git-e8273a8aad00
It is usually recommended to upload package-lock.json file as well.

[taos-ci]

@niley7464, 💯 All CI checkers are successfully verified. Thanks.