There's no new code here, just a reorg. Had to change some import calls
in some files to make it all work properly.

Having just done a lot of work in the accounts directory I figured it
could do with some organization. I've broken out all the Header
functions into a different file in order to cut down on the size of the
account.js file.

I also moved the transactions files into a new directory since they are
used by other pages. Also makes them easier to find with this structure.

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 #943

Creates the transaction when clicking "enter". Irrelevant of which field
is currently active.

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.

Seems to build fine, will test later.

Disabling the flaky unit test step. We should re-enable it eventually,
but right now it just creates unnecessary noise..

Added an extra `waitFor` after a flaky unit test step.

I'm not really super happy with this workaround.. but it does make the
test much more stable (re-ran 5x and no failures:
https://github.com/actualbudget/actual/actions/runs/4455134799).

I think there is some internal timeout happening somewhere which is
causing this issue.. But not really sure where. And this will hopefully
get auto-fixed once we migrate to a new table. 

Tests cases should be independent. You should be able to run them in
whatever order you want. And they should still pass.

Currently this is not the case. The order of the tests is very important
due to the "pseudo" randomization algorithm.

This PR makes the mock data IDs truly unique thus better exposing the
issue in our tests. Also this PR fixes the dependency issues thus making
each test case truly independent.

---------

Co-authored-by: Jed Fox <git@jedfox.com>

*  (prettier) adding trailing commas

* More commas

* style: enforce sorting of imports

* style: alphabetize imports

* style: merge duplicated imports

* 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