feat: unify jest configs between insurance and education repositories [no issue]

[sylvaingrasland-ornikar]

Context

We want to unify our jest configurations.

Solution

Extract configuration parts from insurance and education repositories that appear to be the same.

[reviewflow]

Progress

☑️ Step 1: ✏️ Write code
☑️ Step 2: 💚 Checks
☑️ Step 3: 👌 Code Review
☑️ Step 4: 🚦 Merge Pull Request

Options:

• 🔜 automerge: Automatically merge when this PR is ready and has no failed statuses. When the repository requires branches to be up to date before merging, it merges default branch, with a queue per repo to prevent multiple merges when several PRs are ready. A fail job prevents the merge.
• 🚦 skip-ci: Add [skip ci] on merge commit when merge is done with autoMerge.

Actions:

• 🐛 Force updating reviewflow checks for this PR. Use this to try to fix reviewflow checks that are still missing/pending, which might happen if webhook failed or something bad happened when reviewflow tried to send the status check to github.
• 🔄 update branch: Merge base branch in this PR's branch. Only works if merging is possible without conflicts.

[christophehurpeau]

petits commentaires 🙈

[PSniezak]

Yo ! J'ai pu faire des tests côté learner-apps, ça m'a l'air de tourner comme il faut et ça m'a permis de faire un bon coup de clean en même temps : https://github.com/ornikar/learner-apps/pull/6340.

On pourra arbitrer demain pour le reste, merci Sylvain !