Fix #5184, ensure Typescript developer experience doesn't influence user experience

[code-ape]

Related PRs and Issues

1. master branch build broken: 'npm i knex/knex@master' does not work #5184
2. Improving Typescript developer experience #5151

Reason

#5151 caused all end user installs of Knex to fail due to single line in package.json. Intention was that when developers ran npm install while working on Knex it would automatically build the Typescript files. This was a mistake and it should be a Husky script for the git hook post-checkout.

Changes

1. Converted automation to build Typescript files from npm postInstall and prepublishOnly hooks to prepare hook in package.json.
2. Added Husky git hook to automatically build Typescript files on branch changes in package.json.
3. Fixed files section to properly exclude non-publishable lib/ files in package.json.
4. Fixed npm command build:gitignore to work on Windows in package.json.
5. Updated contributing guide to mirror above changes in CONTRIBUTING.md.
6. Added Github Actions CI integration test for installing the package on all combinations of OS and Node version in .github/workflows/integration-tests.yml.
7. Updated Husky dependency from 7.x to 8.x in package.json.
8. Updated Husky pre-commit hook with newer shell template in .husky/pre-commit.
9. Added entry to ignore packed Knex package tar gzip files in .gitignore.

[code-ape]

@kibertoad or @OlivierCavadenti please have all tests run and if they pass I'll update description and convert from draft for review!

[kibertoad]

@code-ape integration tests got nuked somehow

[code-ape]

@kibertoad it's because I'm an outside contributor and changed that CI file. I think there should be some way for you to "approve and run it"?

Correction: It's because I messed up the YAML 😅

[coveralls]

Coverage remained the same at 92.233% when pulling 93ee7aa on code-ape:I-5184/move-auto-ts-build-to-husky into a4df3e3 on knex:master.

[kibertoad]

@code-ape I think restriction only applies to first-time committers, CI should kick-in automatically for you.

[code-ape]

@kibertoad and @OlivierCavadenti, draft status removed, description updated to describe all changes, and all CI tests passing. Handing it off to you to do as you will 😄