Clarification on parsing BLE data

[LMieldazis]

Hi!
I have been facing issues with the Enviro running on battery as described in pimoroni/enviro#208. Also I have other simple BLE thermometers running around the house and they take about a year to deplete their battery.
So I was hoping that running the BLE firmware would help me get both a far longer battery life and a more stable experience.

On the README here it says "We'll provide a small client library to give you some clues how to do this" but I could never find it. Can you help me understand how I can get that going? I am comfortable creating my own "2prometheus" code to integrate with my ecosystem, but can't seem to wrap my head around reading and parsing these BLE messages.