chore: use multi-gitter script to auto upgrade to app-scripts@12 with Vite and React 18

[kabaros]

PoC for using multi-gitter to do bulk upgrade over multiple repos.

You can see below the linked PRs generated automatically by running multi-git against six repos.

implements https://dhis2.atlassian.net/browse/LIBS-700

Steps

1. install multi-gitter as described in the repo
2. update the config.yml as you see fit (i.e. to include certain repos)
3. run multi-gitter run "node $PWD/script.js" --config ./config.yml

The current script runs certain tasks we identified for upgrading to Vite and React 18 (the ones documented here). We will work on refining the script next to make the task for the consuming apps as pain-free as possible.

This PR is just to showcase the script, unlikely to merge it (not in this place for sure)