* Bundle loot-core types into the API

So we can have loot-core be the source of truth
for some types that get passed through

- Improves downstream development with API by including types
- Use path aliases for dist vs dev tsconfigs
- Convert api index to typescript as example
- Permit ts-ignore for issues with our version of typescript

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

* Add proper types to runHandler

- Args and return values from runHandler should now work within loot core
- Updated some of the handler types to be more accurate

* Another round of prefer-const rule updates

* Release notes

* Fix test error

* Fix sync.ts

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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`

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

*  (prettier) adding trailing commas

* More commas

* style: enforce sorting of imports

* style: alphabetize imports

* style: merge duplicated imports