Bumping package version to match actual/web, and deleting two scripts
i'm pretty sure are legacy/unused.

This significantly speeds up `yarn lint` for me. It also ensures we’re
listing all source files in the project, including the `.eslintrc` files
and any other files that may be present.

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

Depends on https://github.com/actualbudget/docs/pull/202.

Bundle sizes are unchanged but now we no longer pull in the
Electron-specific FS code on the web version

- Fix socket connection issues when reloading
- Fix external url clicking & middle clicking internal links
- Remove broken menu option. Easier for now than refactoring the
settings panel it now lives in. We can add it back later if needed?

1. Upgrade all `cross-env` versions to be the same
2. Added `cross-env` to `desktop-electron` - it was used there, but was
missing as a dep

Updates to the latest version of electron and moves the backend-frontend
communication from node-ipc to websockets. This resolves the previous
roadblock regarding `nodeIntegration` .

Done

- Remove node-ipc in favour of websockets. 
- Move file copying out of `preload.js` to avoid importing module `fs`
there
- Bump all electron pacakge versions to the latest
- Added new package for finding open ports as node-ipc is gone
- Tweaked webpack config for above changes


Partially fixes #468

Questions/ Pending:
- Literally every single test fails for me, presumably some issue with
my setup/environment.
- The websocket communication is not using TLS. I'm not sure how to
enable this, or if we even need to as its all local.
- Still need to create the CI for building/deploying but I'm not sure
where start in this regard as i have no exp with it. Presumably we will
need to point the electron auto-updater to the github releases url's. If
people are happy with this PR I will look at adding the CI before its
merged.
- In dev mode only, I have disabled TLS security becuase my docker
container's cert is not signed. I _assume_ this will be true for other
people who spin up the server on thier own hardware. Perhaps I just need
to change my cert to one from letsencrypt or something...

Notes.
I have not touched javascript in eons so my apologies if the commit
trail is a bit fragmented. I tried to keep them fairly contained and
then there is a slightly gnarly final commit fixing all the linter
issues... Please let me know if you want me to squash some commits etc.

I initially tried to move this to web workers the same way the web app
does it but this was unsuccessful. I have found no way to spin up a
worker in one place (frontend/backend) and then pass this worker to the
other. The electron ipc channels don't allow you to directly pass
objects such as workers, everything is cloned/serialised. Passing a port
number so the other end can spin up its own socket works fine.

---------

Co-authored-by: Shazib Hussain <contact@shazib.com>
Co-authored-by: Jed Fox <git@jedfox.com>

Switch to TS version of `no-unused-vars` rule. 

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This reverts commit ae8ef267.

Revert "Merge pull request #204 from TomAFrench/yarn-workspace-dependencies"

This reverts commit b0ed8d51, reversing
changes made to 5505a143.

It’s still also available as a modal when editing payees