add 'proud' command for inserting capitalized word (talonhub#1138)

I have found this command very useful even though we already have
'title' command. Just, like how the 'word' command is useful in addition
to the 'say' command.

core/text/text.talon

@@ -13,6 +13,7 @@ phrase <user.text> over:
 word <user.word>:
     user.add_phrase_to_history(word)
     insert(word)
+proud <user.word>: user.insert_formatted(word, "CAPITALIZE_FIRST_WORD")
 recent list: user.toggle_phrase_history()
 recent close: user.phrase_history_hide()
 recent repeat <number_small>: