New tool unidump

[Andrey Lukyanov]

apropos unidump:

It would be nice to add the option of printing not only numbers, but also
character names and other info from the NamesList.txt file.

I am using a homemade program at my computer:

$ typecode fc25 
66 63 32 35 

$ typecode -l fc25 
0066	LATIN SMALL LETTER F
0063	LATIN SMALL LETTER C
0032	DIGIT TWO
0035	DIGIT FIVE

$ typecode -f fc25 
0066	LATIN SMALL LETTER F
0063	LATIN SMALL LETTER C
0032	DIGIT TWO
	~ 0032 FE0E text style
	~ 0032 FE0F emoji style
0035	DIGIT FIVE
	~ 0035 FE0E text style
	~ 0035 FE0F emoji style