Google Meet - Jabra Call Control support

Adds Jabra call control support to Google Meet

Main features: - Auto busy light on during meetings - Sync device mute status with Google Meet mute button - Mute Google Meet from the device - Exit the meeting using the hang-up button on the device Supports devices working through Jabra Link dongle or USB; controlling devices connected directly to Bluetooth is not yet supported. **IMPORTANT NOTE**: You'll need to provide HID permissions to allow the extension to work with your Jabra device. Please click on the extension icon while being on the Google Meet page to connect. Tested with: Jabra Evolve2 85 / Jabra Link 380 Jabra Evolve2 75 / Jabra Link 380 Jabra Elite 85h / Jabra Link 370 Jabra Evolve 40 Jabra Speak 510 Jabra Speak 750 Please feel free to submit issues and suggestions to https://github.com/balansse/google-meet-jabra/issues