Add "echo" on APDU file

[thibaultmeyer]

It could be nice to have a way to output custom text or to add APDU "title" on the console output. When the APDU file have two or three APDU commands, no problem, but when it contains more than 40, the output become difficult to read.

test.apdu

echo "> Install application";
0x80 0xb8 0x00 0x00 0x09 0x06 0xB3 0x61 0x5D 0x7F 0xC4 0xDC 0x7F 0x00 0x7F;

echo "> Select application";
0x00 0xA4 0x04 0x00 0x06 0xB3 0x61 0x5D 0x7F 0xC4 0xDC 0x7F;

Console ouput

> Install application
CLA: 80, INS: b8, P1: 00, P2: 00, Lc: 09, 06, b3, 61, 5d, 7f, c4, dc, 7f, 00, Le: 06, b3, 61, 5d, 7f, c4, dc, SW1: 90, SW2: 00
> Select application
CLA: 00, INS: a4, P1: 04, P2: 00, Lc: 06, b3, 61, 5d, 7f, c4, dc, Le: 00, SW1: 90, SW2: 00