I noticed that:

- The web and electron versions of our `uuid` module both looked exactly
the same…
- …and deferred to the `uuid` package…
- …and the async version just called the sync API.

So now we will just use the `uuid` package directly everywhere.

Closes #944, closes #532. ~WIP because something is causing the test
budget to fail to create because it’s using INSERT instead of UPDATE sql
queries. (Or not? I have no idea)~

This is the last PR with lots of renaming for `loot-core`!

This PR converts everything (aside from electron) from CommonJS to ESM.
It is needed to reduce the changes that will happen during the migration
to Typescript (as TS does not play nice with CJS).

Basically:
- rewrite `require()` to `import`
- rewrite `module.exports` to `exports`
- introduce `ts-node` to run importers so we can convert them to TS too

Lastly, sorry for this larg-ish PR, not my preference but when I tried
to reduce its scope, I would end up with mixed commons/esm that was even
more tricky to handle.

This is not a full fix for the flakiness. One of the test cases will
still be flaky. But at least this fixes the other test cases thus
improving stability.

*  (prettier) adding trailing commas

* More commas

* style: enforce ordering of imports

* style: sort imports in loot-core

* style: sort imports in desktop-client

* style: sort imports in loot-design

* style: manual fixes