Delimiter Switch to Console Decoder

An optional new switch to the console bufr_decoder that allows for delimitation of the output message such as [-delimiter <delimiter>]

ex. bufr_decoder ... .... -delimiter ^

The resulting output using a delimiter would look as follows:
...
...
### Section 4
### length : 139
### Section 5
### length : 4
###
## Subset 1 : 30 descriptors
# 311001
# 301051
001006^VALUE=" "^CCITT IA5^AIRCRAFT FLIGHT NUMBER
002061^VALUE=0^CODE TABLE^AIRCRAFT NAVIGATIONAL SYSTEM
...

the ordering of the descriptor, value, unit, description is not important.

Currently the output of bufr_decoder is only good for visual appeal but proves difficult for parsing.
  001204 IDENTIFICATIF DE STATION, OBSERV. HORAIRE CCITT IA5 XFA
  001019 LONG STATION OR SITE NAME CCITT IA5 FANNY ISLAND
  060001 TABLE ID (SENSOR ARRAY IDENTIFIER) NUMERIC 160
  006002 LONGITUDE (COARSE ACCURACY) DEGREE -125.98

Writing a direct C intermediary program that uses a chosen delimiter using the libec api is the way we get around this but it is one extra piece of dependency to C as opposed to one single run using bufr_decoder.