Whitelist files to include when publishing

[MrChocolatine]

Build

Whitelist files to include when publishing (#172)

To reduce the final bundle size.

Before

➜ npm publish --dry-run

npm notice === Tarball Contents ===
npm notice 22B    .github/CODEOWNERS
npm notice 1.6kB  addon/components/feature-controls.hbs
npm notice 191B   addon/templates/features-list.hbs
npm notice 87B    config/environment.js
npm notice 202B   addon/services/feature-control-storage.js
npm notice 82B    app/services/feature-control-storage.js
npm notice 3.1kB  addon/components/feature-controls.js
npm notice 77B    app/components/feature-controls.js
npm notice 125B   app/storages/feature-controls.js
npm notice 74B    addon/routes/features-list.js
npm notice 70B    app/routes/features-list.js
npm notice 73B    app/templates/features-list.js
npm notice 70B    index.js
npm notice 794B   addon/instance-initializers/load-feature-controls.js
npm notice 110B   app/instance-initializers/load-feature-controls.js
npm notice 110B   addon/route-setup.js
npm notice 66B    addon/utils/window.js
npm notice 3.0kB  package.json
npm notice 1.1kB  LICENSE.md
npm notice 6.5kB  README.md
npm notice 84.5kB docs/screenshot.png
npm notice 313B   .github/workflows/ci.yml
npm notice 375B   .github/workflows/contributors.yml
npm notice 691B   .github/dependabot.yml
npm notice 547B   .github/workflows/tag-release-publish.yml.yml
npm notice === Tarball Details ===
npm notice name:          ember-feature-controls
npm notice version:       3.0.0
npm notice package size:  74.9 kB
npm notice unpacked size: 103.8 kB
npm notice total files:   25

After

➜ npm publish --dry-run

npm notice === Tarball Contents ===
npm notice 1.6kB addon/components/feature-controls.hbs
npm notice 191B  addon/templates/features-list.hbs
npm notice 87B   config/environment.js
npm notice 202B  addon/services/feature-control-storage.js
npm notice 82B   app/services/feature-control-storage.js
npm notice 3.1kB addon/components/feature-controls.js
npm notice 77B   app/components/feature-controls.js
npm notice 125B  app/storages/feature-controls.js
npm notice 74B   addon/routes/features-list.js
npm notice 70B   app/routes/features-list.js
npm notice 73B   app/templates/features-list.js
npm notice 70B   index.js
npm notice 794B  addon/instance-initializers/load-feature-controls.js
npm notice 110B  app/instance-initializers/load-feature-controls.js
npm notice 110B  addon/route-setup.js
npm notice 66B   addon/utils/window.js
npm notice 3.0kB package.json
npm notice 1.1kB LICENSE.md
npm notice 6.5kB README.md
npm notice === Tarball Details ===
npm notice name:          ember-feature-controls
npm notice version:       3.0.0
npm notice package size:  6.2 kB
npm notice unpacked size: 17.5 kB
npm notice total files:   19