fixed error with lowdb

[JP-Garcia]

Fixes #389

[biast12]

Just tested it and it works

[vogler]

What is this for? Wasn't #380 just due to a missing npm install?

[biast12]

Ohh idk about that issue or the original issue tbh, but it's giving an error for me when running something like unrealengine.js SyntaxError: Unexpected token '', ""... is not valid JSON

And this PR seems to have fixed that error

[vogler]

@biast12 Likely your unrealengine.json contains ' instead of " for quoting strings which is why JSONFile.parse from JSONFilePreset fails. You can check if it is valid JSON here: https://jsonlint.com
Why this is not the case with the old API, I don't know. Would be strange if JSONFileSync.parse is more lenient.
Looking at https://github.com/typicode/lowdb, it should be equivalent, but using the presets is nicer if no custom serialization is needed.

This PR also changes jsonDb from async to sync, so the await at all call-sites should be removed.

[biast12]

Mmmmm that's weird, i haven't edited the .json file, and i assume the program would use "", also when i checked did it use "" but i might have deleted the old .json file so idk

Tho i have just noticed a whole other issue, i'm getting a constant "One More Step" cloudflare security check which won't allow me to continue at all, and idea how to fix it?