example/twr_aloha: fixes

[fjmolinas]

Contribution description

This PR fixes some issues with the examples/twr_aloha example and some improvements to work better as read-eval-print-loops:

repl improvements:

• 359ad5e: only print distance values on initiator to avoid spurious data on the other node pexpect buffer
• 93f7066: make sure the function blocks for the whole request time

misc improvemtns:

• 5e7bb6c: error on invalid short address
• 1af9cdb: extends ifconfig command

fixes:

• 26969e2: should be & and not &&
• 544551d: adds missing request parameters

Testing procedure

examples/twr_aloha still functions correctly

> main(): This is RIOT! (Version: 2022.07-devel-236-gbab476-pr_twr_aloha_fixes)
> ifconfig
ifconfig
Iface  3        HWaddr: 03:B4  Channel: 5  NID: DE:CA

                Long HWaddr: 08:2B:31:07:CC:53:03:B4
                TX-Power: 8.0dBm  TC-PGdelay: 0xb5
> twr lst on
twr lst on
[twr]: start listening
>

main(): This is RIOT! (Version: 2022.07-devel-236-gbab476-pr_twr_aloha_fixes)
> twr req -c 5 -i 100 03:B4
twr req -c 5 -i 100 03:B4
[twr]: start ranging
{"t": 15519, "src": "57:81", "dst": "03:B4", "d_cm": 27}
{"t": 15620, "src": "57:81", "dst": "03:B4", "d_cm": 28}
{"t": 15720, "src": "57:81", "dst": "03:B4", "d_cm": 30}
{"t": 15820, "src": "57:81", "dst": "03:B4", "d_cm": 26}
{"t": 15920, "src": "57:81", "dst": "03:B4", "d_cm": 32}

the test passes:

make -C examples/twr_aloha/ flash test-with-config

...
----------------------------------------------------------------------
Ran 3 tests in 9.262s

OK

[fjmolinas]

I'll split once the CI is green.

[aabadie]

Code changes look good and test outputs are provided.

ACK