Use security info to detect chip

[SergioGasquez]

As @jessebraham spotted, in #882 we reverted the way detect_chip work, to rely again on the magic value instead of chip security info, which should be the preferred way (#814). In this PR:

• I moved all the security info stuff to the connection module (its where its used) although we have to reexport it and keep a "stub" method in flasher struct to avoid breaking changes (those could be deleted in the next major), also this helps in Untangle Flasher code, that isn't related to flashing. #793
• When detecting a chip, we try to use the securtiy info, if that doesnt work/chip doesnt have it, we fallback to the magic value

[MabezDev]

LGTM, thanks!