feat(devices): connect HRM and display HR in devices

[danielkov]

Description

This is a PoC PR which can be built upon, for implementing device handling in the app. Currently only heart rate monitors can be connected and observed.

Motivation and Context

First phase of this software will have BLE support on Chrome (and other supported devices) and Heart Rate, Speed, Cadence, Power and Controllable (ANT+ over BLE) devices will be supported. As the first step of this effort this setup should be established.

How Has This Been Tested?

Heart Rate Monitor support can already be tested via:

1. Navigate to /devices
2. Press on Heart Rate Monitor
3. Upon prompt, select a viable BLE HRM device
4. Wait and observe as state changes and finally HR data shows up

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[vercel]

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