Explicitly call out files in package.json

[hildjj]

Explicitly call out which files should be included in the published NPM package. This will keep tests, benchmarks, examples, and other non-essential files from making the package larger than it needs to be. The GitHub repository is correctly marked in the package file, so any user that wants these things
can have ready access to them online.

README.md and LICENSE are always included.

Fixes #78.

New output of npm pack --dry-run:

npm notice
npm notice 📦  @fastify/send@3.1.1
npm notice Tarball Contents
npm notice 1.2kB LICENSE
npm notice 8.6kB README.md
npm notice 513B index.js
npm notice 431B lib/collapseLeadingSlashes.js
npm notice 446B lib/containsDotFile.js
npm notice 416B lib/contentRange.js
npm notice 633B lib/createHtmlDocument.js
npm notice 443B lib/createHttpError.js
npm notice 314B lib/isUtf8MimeType.js
npm notice 636B lib/normalizeList.js
npm notice 2.7kB lib/parseBytesRange.js
npm notice 849B lib/parseTokenList.js
npm notice 17.0kB lib/send.js
npm notice 1.4kB package.json
npm notice 5.0kB types/index.d.ts
npm notice 1.5kB types/index.test-d.ts
npm notice Tarball Details
npm notice name: @fastify/send
npm notice version: 3.1.1
npm notice filename: fastify-send-3.1.1.tgz
npm notice package size: 12.5 kB
npm notice unpacked size: 42.1 kB
npm notice shasum: a4eb816822048cb0e0cfa0ab4ecb7595cc9d4ae2
npm notice integrity: sha512-aeMeRF+iaGR7V[...]Qia9fG83/aGag==
npm notice total files: 16
npm notice
fastify-send-3.1.1.tgz

I tested this to ensure I got all of the important files by:

• npm pack
• mkdir /tmp/foo
• cd /tmp/foo
• npm init -y
• npm install .../fastify-send-3.1.1.tgz
• create server.js from docs
• node server.js
• (in another tab) curl to test

Note that there is not a "benchmark" script in package.json, so I haven't run npm run benchmark as requested below.

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[Uzlopak]

It is consensus between the fastify maintainers, that we include test files and stuff.

The solution for that issue with the test is to create that file when testing.

[jsumners]

Thank you for your interest in this topic. Please see the discussion in fastify/skeleton#42 (comment) for my reasoning against such a change.

Also see https://www.youtube.com/watch?v=D18jlN2JNE0.

[hildjj]

I strongly disagree with your reasoning. Using directories in the files attribute as I've done here means that there is very little maintenance required in practice.

However, I respect your right to do whatever you want with your projects.