Refactor Hitag S operations into separate submenu

[CiRIP]

Rationale: Hitag S is sufficiently different from other Hitags that it requires special treatment for every operation. Having a mutually-exclusive set of arguments (--ht2, --hts, etc.) for a command is counter-intuitive, so moving Hitag S, 1 and 2 operations into separate submenus makes sense (see also: lf em).

[CiRIP]

future work: unify hitags_config_t with struct hitagS_tag

[iceman1001]

Yeah, the twist everything into same command category "lf hitag" is ruff. So seperating it is a good thing. Makes easier to follow and change code. All good.
With that said, the choice of lf hitag s as its own sub category is less good from user perspective.
We use -s as a param for save file. lf hitag s dump -s would look like a typo.

With lf em it was easier since the card family has simple short names.

A. New second level category

   lf hitag2 
   lf hitag1 
   lf hitags  

B. longer third level names

lf hitag ht2
lf hitag ht1
lf hitag hts

@doegox @mwalker33 any suggestions?

[CiRIP]

Yeah, lf hitag s dump -s looks a bit dumb. My vote would be with lf hitag hts.

[iceman1001]

ok, go for alternative two. lf hitag ht2 style

[CiRIP]

fixed