Clean up/document import/export results format

[piercus]

• Add documentation in the readme regarding import/export results format
  • export format
  • explanation of how to use it
• Change export format to not consider categories but only consider the folders like

{
  "epoch": "2019-10-25T11:13:02.723Z",
  "folders": {
    "../annotated/1-5" : {
            "thumbnail": null,
            "filenames": [
              "a",
              "b",
              "c",
              "w"
            ]          
     },
     ...
    "../annotated/notClean":
      {
        "filenames": [
          "q",
          "p",
          "r",
          "s"
        ],
        "thumbnail": null,
        "dir": "not-clean"
      }  
   }
}

• Document term-annotaor input/outputs https://github.com/teamklap/term-annotator/blob/master/lib/export-results.js using jsdoc
• Document import-resulsts
• Document other function without jsdoc
• Create a node binary function node bin/import-results.js --results data/example-results.js --source-folder tmp/src --destination-folder tmp/dest
  • this function will use lib/helpers/import-results.js but not any electron component
  • another function lib/backend/import-results.js' will do dialog/store and calllib/helpers/import-results.js`
• Same exercise must be done regarding node bin/export-results.js --destination-folder tmp/dest --results tmp/example-results.json
• Everything erlated to app stuctures (config/results format ...) must be in lib/helpers and seperated to rtghe electron stuff in lib/backend and lib/frontend

Similar issue will be open in belley-annotation

[TaniaPash]

PR: https://github.com/teamklap/term-annotator/pull/24

[TaniaPash]

done