Create an option taking a single OptDescr. No explicit Name is given
for the Option, the name is the first LFlag given.
Example:
option sf lf d get set *
sf: Short
option name, for example:
['d']. No hyphen permitted. *
lf: Long option name, for example:
["debug"]. No
hyphens permitted. *
d: Description of the option, shown to
the user in help messages. *
get: Get the current value of
the flag. *
set: Set the value of the flag. Gets the current
value of the flag as a parameter.