Usage of .figmaexportrc.ts

[marcomontalbano]

If you prefer, you can create a .figmaexportrc.ts and use TypeScript instead.
For doing so, you just need to install a few new dependencies in your project.

npm install --save-dev typescript ts-node @types/node @figma-export/types

and slightly change your package.json

{
  "scripts": {
+   "figma:export": "ts-node ./node_modules/.bin/figma-export use-config .figmaexportrc.ts"
  }
}

You can take a look at .figmaexportrc.example.ts for more details.

Closes #74