Identify clearly the default Wireless AP Name and User/password for testing

[jubeormk1]

The default steps to connect and username are described in a screenshot of the debuging output.

Since the image is very wide and the text appears small in a FHD display and is shown in a use case.

I suggest that it get's promoted as the last step in the building section:

...
Running on the target:

cargo install espflash
cargo run --release

...

• Default AP Name: SSH-Stamp
• Default SSH login details: zssh@192.168.0.1

[brainstorm]

... and, well, currently hardcoded pins GPIO10 and GPIO11 at UART1, pending to be changed by issue #23.