2. Delay and don't clear halt request when unbricking.

with better target detect

also check if the target is connected, instead of reading nonsense in the void
and cherry on top, check for -h flag at the top to avoid plugging something to get help

Signed-off-by: bmx <none>

 * Add extra wait when flashing.

make from any example dir nowadays does a fine job of also making minichlink and minichlink.so, with them excluded in .gitignore no commit will ever upload them again.

make from any example dir nowadays does a fine job of also making minichlink and minichlink.so, with them excluded in .gitignore no commit will ever upload them again.