Show better error descriptions

Instead of showing "Flash failed" with generic instructions, we might know the cause of a particular error.

Examples:
- `NotFoundError: Failed to execute '*' on 'USBDevice': The device was disconnected.`
- Most likely caused by the device being unplugged/faulty cable
- `NetworkError: Failed to execute '*' on 'USBDevice': A transfer error has occurred.`
- The device has stopped responding or we are unable to communicate with the device. Either an issue with qcserial driver being bound to the device, the device is in a bad state, or the power delivered to the device is not enough.
- `SecurityError: Failed to execute 'open' on 'USBDevice': Access denied.`
- This may be caused by `udev` rules preventing communication with the device - [example rules here](https://github.com/nelsonjchen/c3-faux-touch-keyboard?tab=readme-ov-file#ubuntu-linux-preparing-ubuntu-linux-to-allow-the-device-to-flash-via-a-chromium-based-browser)
- `NetworkError: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface.`
- Likely caused by qcserial driver being bound to the device.
- `Unsupported mode: error. Please reboot the device.`
- Device is in Sahara error state - we should tell the user to unplug their device for 30 seconds and then try again!