feat: support option whose names ends with - and :

[sigoden]

use - to mark prefixed option, but use -- to escape name ends with -
use : to mark assiged option, but use :: to escape name ends with :

# @option --oa1-
# @option --oa2--
# @option --ob1:
# @option --ob2::

USAGE: prog [OPTIONS]

OPTIONS:
      --oa1 <OA1>
      --oa2- <OA2>
      --ob1=<OB1>
      --ob2: <OB2:>

prog --oax1 v1 --oax2 v2 
prog --oa2- v1
prog --ob1=v1
prog --ob2: v1