Decode Sparkplug Longs to Numbers

[AlexGodbehere]

I've been using this version of the application locally for some time and figured it may be useful upstream. The primary change ensures that Long values are decoded into Numbers when using Sparkplug payloads.

Before:

{
  "timestamp": {
    "low": 55640321,
    "high": 391,
    "unsigned": true
  },
}

After:

{
  "timestamp": 1679387932588
}

Other Changes

• Update to Node 19
• This may be quite opinionated, but I've also made the value window automatically expand to the full size of the message to reduce scrolling

[bj00rn]

@AlexGodbehere could you rebase this PR on master please, and give it some testing and ill try to get it merged.

I had to refactor sparkplug.proto into a js const since the file was not included in packaging and broke binaries.

Thanks

[bj00rn]

duplicate of #727?