Fix reconnect issue

[renehansen]

Previously, we were not able to reconnect to an Android device once we disconnect. That is now fixed.

Changes:

• When removing device from connected device, also remove it from discovered devices and ongoing devices.
• Enable use of await when calling "connectToDevice" by adding result.success (and deleted redundant Result parameter in connectWithStreamHandler)
• Use Bluetooth address instead of toString() as id, because toString() replaces the hexadecimal digits of leftmost 4 bytes (in big endian order) with "XX", e.g., "XX:XX:XX:XX:12:34" from API level 34.
• Upgrade minSdk to 24

How to test:

• Disconnect and reconnect the demo app. The device is now able to connect after disconnect.