CoreTemp: refactor BLE runtime and added ANT+ HRM configurator

[zyf0717]

Summary

• Rework CoreTemp BLE lifecycle handling to support explicit pair/disconnect, reconnect backoff, cache rebuilds, pause/resume ownership, and status events.
• Add CORE Control Point support for ANT+ HRM scan, pair, status, and clear workflows.
• Add App Loader custom settings for background connection, widget visibility, debug logging, custom-profile mode, scan window, and default ANT+ HRM ID.
• Package coretemp.hrm.json, add deployable runtime modules, and bump CoreTemp to 0.10.

Validation

• npm test
• Fork GitHub Actions passed on latest commit
• Verified branch is CoreTemp-only commit with no other changes
• Tested on multiple Bangle.js 2, on multiple CORE/calera + various ANT+ HRMs (PowerLabs Chest HRM, Polar H10 and Verity Sense)

[zyf0717]

@ihewitt looping you in as the original CoreTemp author. This PR substantially refactors CoreTemp’s BLE lifecycle and adds ANT+ HRM configuration/control-point support. I’d appreciate your review, especially around whether the new runtime ownership model, reconnect/cache behavior, and settings UX still fit the app’s intended design.

For detailed docs please see README.md.