initial version of BotCommander

simple program to send and receive stuff with DataInput/OutputStream
over Bluetooth

**problem**:

- currently the chars/ints/(etc) received **are not same**
as send by lejos software (Penbot)
- a bunch of 'A' (ascii 41) chars sent by Penbot are read as unicode
  char 䅁 (U+4141); 'B' as 䉂 (U+4242); and so on
- current hypothesis: this is problem with 32-bit lejos / 64-bit
  laptop jdk representation of chars
- try using 8-bit bytes? (java byte should always be an 8-bit byte)