Point every app's fap_weburl at the renamed repo
(github.com/andydixon/flipper-bluepp) and recenter the build.sh header on the
full-stack BLE firmware and the app suite rather than a single app. GitHub
repo renamed from flipper-bt-inspector; the slug drops "++" since GitHub repo
names cannot contain "+".
Connects, walks every service/characteristic, reads all readable values, and (on OK) writes boundary payloads to writable characteristics, logging every response. For authorised testing. Reuses libble.