Fixed connection status parsing, updated AirPods images

• Fixed connection status parsing for latest macOS (12.3) and bluetoothconnector. The old parsing was broken in a few ways, including use of colons for MAC addresses as well as the system_profiler no longer formatting the output in the same way.
• Updated AirPods graphics, uses latest generation of AirPods now
• Updated the README to remove LINT warnings and remove/fix legacy content

v2.0

• Builds off of Marius Kießling's great work and provides needed updates to support Apple Silicon Macs as well as moves to Python3.
• Slightly changed the behavior of 'Enter' key after successful configuration, it will only connect (or no-op if already connected) rather than toggling current connection state.
• Fixes issues with newer macOS versions (12.x) where retrieval and parsing of Bluetooth devices, their MAC addresses, and the connection status was unreliable. I didn't dig into the legacy behavior to know exactly what changed, but some combination of CLI utilities and how the MAC is represented (namely the delimiter – colon vs. dash) appears to be at least a culprit.
• Fixed/improved some of the workflow verbiage and notes to clarify behavior
• Added several debug taps