message: fix: Use "files" in package.json for make output package cleaner
  ## Reason
  Previously, configs files in output package broke builder in some projects
diff: "main": "dist/cjs/index.js",
  "module": "dist/index.js",
  "typings": "dist/index.d.ts",
  + "files": [
  + "dist",
  + "CONTRIBUTING.md",
  + "VKUI_TOKENS_MIGRATION_GUIDE.md"
  + ],
  "license": "MIT",
  "description": "VKUI library",
  "repository": "https://github.com/VKCOM/VKUI",
  