Remove qcelp and evrc file formats for TTS util
Improve check during user input

And cast return value as int if num type
Remove support for 11025Hz sample rate in TTS util
Highlight output of language use in TTS util

Uses yellow
Interactive sample rate selection for TTS util

Previously selected the lowest sample rate
Add CLI option to specify sample rate in TTS util

-r, --rate can now specify the value if relevant
	i.e. wav 8000, 16000, 22000
	i.e. spx 8000, 16000
Updated usage statement for flexibility in 
	specifying the output format, and samples