* Some initial UI work for adding SimpleFin.

* SimpleFin proof of concept working.

* Adds linking & unlinking to existing accounts through the account menu UI.

* Added loading and lint fixes.

* Lint changes.

* Added release notes.

* Typecheck cleanup.

* Import, lint, typecheck cleanups.

* More typecheck cleanup.

* Refactored language for consistency.

* Added default institution name.

* Lint cleanup.

* Addressed change requests.

* Added a default to migration, made variables consistent, added feature flag.

* Added account_sync_source to server schema.

* Adds account_sync_source to test.

* Fix for typecheck.

* Attempt to make typecheck happy.

* Added strict ignore.

* Moved account_sync_source to the right model (face palm).

* Hotfix for institution format.

* Lint cleanup.

* Removed unnecessary promise.all.

* Lint cleanup.

* Another round of prefer-const rule updates

* Release notes

* Fix test error

* Fix sync.ts

Renaming all occurrences of Nordigen to GoCardless

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)~

Another batch of `loot-core` migrated.

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.

* Update gitignore about .idea folder

The .idea folder is generated by IntelliJ IDEA

* Add integration with Nordigen

* Fix linter

* Use longer access to the account

* Move normalizatoin of accounts to the backend side

* Fix possibility to force remove account

* Move normalization of transactions to the backend side

* Fix Settings.js after merge

* fix enableing bank sync

* delete old Settings component

* Use camelCase for nordigen/remove-account call

* WIP refactor

* Fix auto-selecting existing accounts

* Fix unlinking accounts

* Align to backend changes for Nordigen integration

* Fix AnimatedLoading

* Code review changes

* Fix TZ date issue

* rm mobile package

* rm BankSync settings section

* rm console.log

* rm comment

* applies some alignments from code review

* applies some alignments from code review

* Add prefix for nordigen specific functionality

* Use arrow char

* Add prefix for nordigen functionalities

* Fix linter

* Display only open accounts

* Update packages/desktop-client/src/nordigen.js

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

* Fix incorrect calc of TZ for endDate

* Improved error checking

* Fix throwing invalid-schema error

* Fix for syncing large batches in Safari

---------

Co-authored-by: Filip Stybel <filip.stybel@ynd.co>
Co-authored-by: Leon Ebel <24588023+ebelleon@users.noreply.github.com>
Co-authored-by: Jed Fox <git@jedfox.com>

*  (prettier) adding trailing commas

* More commas

*   upgrade eslint-plugin-import and fix issues

* Change import ordering

* 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