Feat/use tahu for sparkplug decoding

[bj00rn]

Use tahu https://github.com/eclipse/tahu for sparkplug

Based on #793

Changes

• use sparkplug-payload for decoding
• add sparkplugb client script using sparkplug-client FR: Implement tests for sparkplug topics #781
• add sparkplugb messages to demo video

@thomasnordquist thoughts on this?, Why roll our own decoding, but maybe you have been down this road before?

[thomasnordquist]

I'll try to merge this work with #493, and move the decoding in the fronted.
This would allow the user to select the decoding method, a default should be selected based on the topic path or the first bytes of the data.

[thomasnordquist]

This should make it much easier to decode different data types in the future.

[bj00rn]

I'll try to merge this work with #493, and move the decoding in the fronted. This would allow the user to select the decoding method, a default should be selected based on the topic path or the first bytes of the data.

Sounds good. An "Auto detect" mode for decoding with the possibility for manual override would be awesome. Checkout file-type https://www.npmjs.com/package/file-type package, it has detection of binary payloads. A possibility to download binary payloads would be awesome too!

[bj00rn]

@thomasnordquist pushed commits with sparkplug client for demoVideo