(Vcharset_mojikyo_2022_1): New variable.

(Vcharset_mojikyo_2022_1): New variable.
(Qmojikyo_2022_1): New variable.
(make_charset): Don't use `CHARSET_TYPE_*'.
(range_charset_code_point): Support coded-charset `mojikyo-2022-1'.
(encode_builtin_char_1): Modify for `CHARSET_BY_ATTRIBUTES'.
(Fmake_charset): Don't use `CHARSET_TYPE_*'; modify for
`CHARSET_BY_ATTRIBUTES'.
(Fcharset_from_attributes): Don't use `CHARSET_TYPE_*'; modify for
`CHARSET_BY_ATTRIBUTES'.
(syms_of_mule_charset): Add new symbol `mojikyo-2022-1'.
(complex_vars_of_mule_charset): Add new coded-charset
`mojikyo-2022-1'.