This PR adds types to the `crdt` directory to make the structure of the
merkle tree (really a merkle radix trie) clearer.

---------

Co-authored-by: Jed Fox <git@jedfox.com>
Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>

Add recurring schedule support.

To test: use the schedule keyword with a daily or weekly recurring
schedule.

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.

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Just removing some unused/unnecessary scripts and `IS_BETA` env variable
+ the associated code (we don't use this in the OS version of Actual).

Based on Tom's comment
(https://github.com/actualbudget/actual/pull/1058#issuecomment-1568030881

)
I've eliminated all direct use of date-fns and only use the functions in
months.ts.

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Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>

I've updated the return values in `sync/index` to sensible values based
on how they're being called.

I've updated the type of `msg.value` to be `string | number | null` to
match the values expected by `serializeValue`

- New linter rules are now added
- Perhaps the `createPayee` method i've tagged with a disable should be
deleted.
- I have ignored unused methods in Plaid/Mobile as this stuff is still
WIP/experimental?

Looks like this got missed in the last PR!

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

Last one before I add the actual linter rules!

None of this code is relevant to people who have used the open source
app. I initially wanted to leave it in so it could be used for major new
features in the future, but as it falls further and further out of date
I think it’s best to just delete it in a clean PR that can be referenced
later if desired.

Following on from #1146 this PR removes all unused exports from
`loot-core/`

Closes #1069

I've not actually tested this change. Which is why I'm not changing it
to direct links (as they might not work).

Instead I'm just applying a very quick patch so the message would not be
misleading anymore.

actual-server does not need to import the full actual-app/api package.
It can import only the CRDT stuff.. so I'm extracting it into a new
package to reduce the size of actual-server and make the link between
things more transparent.

This reverts #1029. As raised in #1097, the formatting chosen doesn’t
work well when doing math. There may be a way to balance compatibility
with multiple format styles with handling non-currency amounts
correctly, but it will require some more careful consideration. Re-opens
#894.

URLs with the trailing slash don’t work well — requests end up being
made to `https://example.com//sync/sync`

 and such which can 404

---------

Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>

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

Previously, the frontend would attempt to make real requests to
`https://not-configured/`, which of course failed. I’ve changed the
internal structure to have the lack of a server expressed as a `null`
server. A new `did-bootstrap` browser-level setting has been added to
track if the user clicked “Don’t use a server.”

Finally, I updated the auth logic for methods that call out to the
server to make them consistent and use the early return style which
reduces indentation.

This adds an option to the month drop down to check all the template
lines. If there are errors the offending line is shown with its
category.

I also modified the wording on the regular template return to be more
accurate. Fixes #1100

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

Draft because it is untested, maybe tonight I will test it! Just wanted
to get some code out cause i had a spare 5 minutes.

The new parser isn't immediately good enough to replace the old parser,
and I sadly lost the time to contribute more! Sorry! If someone else
wants to take maintenance burden of this code, we can not merge this.
Otherwise, it should go the way of the Dodo it seems.

Thanks!

Closes #1044

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)~

Added the option to add a remainder goal template. This will use the
remaining available funds and dump them into the respective category.
There is optional weighting. The remainder templates will be forced to
the lowest priority as to run after all other templates.

Usage: `#template remainder <weight>` Add the template line to any
categories you want to catch any remaining funds such as savings. The
amount added to the category will equal
`remaining_budget/total_of_weights*weight`. The default weight is 1.

- 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?

Previously, this would fail with a confusing “cannot read property of
`undefined`” error.

There was one more location where the cleanup script could generate an
error. This should fully resolve the error, along with
https://github.com/actualbudget/actual/pull/1084.