* Convert `sandbox` to `template`

 * Resolving unlock bug in halt mode modification.
 * Start to generalize block sizes.
 * Allow for full-erase-fast-program.
 * Almost have USB bootloader working.

2. Remove ardulink warning - if someone adds support they add support, if not no need for a warning.

+ remove round up in -r mode to read the requested amount of bytes
+ remove the 0x307 check and stash the old ReadBinaryBlob method

Signed-off-by: bmx <none>

5 now allows you to pause current execution.
Improve error reporting on ESP32S2

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

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.