feat: pre-commit hook

[Lulalaby]

No more headache when working with tables

Details

Uses: https://typicode.github.io/husky/ (https://github.com/typicode/husky)
Runs on: git commit
Will be skipped on ci-runs
Runs: fix:tables, test:links & test:build

(For Colin :D)

Notes

• It does not prevent a commit if test:links fails. It only outputs that there's an error. But this is intended since the CI should block that.
• "prepare": "npx is-ci || npx husky" is-ci will be true if executed on github actions, skipping the husky run if needed
• git update-index --again is added to .husky/pre-commit to commit the fixed tables
• We could remove test:build

[Lulalaby]

We might not need to run test:build here in the pre-commit, since it generates a big chunk of text while committing, and we already run that in the CI

[ckohen]

lgtm