Adds Tajaran Akhani language. (#5032)

* Adds Tajaran Akhani language.
Fixes plural form of Tajaran (Tajara->Tajaran) in about 50 places.

* Gives the language a colour distinct from Siik.

* Changelog

code/modules/games/cah_black_cards.dm

@@ -30,7 +30,7 @@
 	"_____ used ____ to create their newest invention, _____!",
 	"Scientists are not allowed to make Gatling _____.",
 	"It's not a party until the ____ arrive.",
-	"No matter how many Tajara you have, _____ is never acceptable.",
+	"No matter how many Tajaran you have, _____ is never acceptable.",
 	"No, the AI's first law is NOT to serve _____.",
 	"The robots are not disposal bins for your _____.",
 	"You can never have too many _____ on shift.",

code/modules/games/cah_white_cards.dm

@@ -9,7 +9,7 @@
 	"Being in a cult",
 	"Racially biased lawsets",
 	"An Unathi who WON'T STOP FIGHTING",
-	"Tajara fetishists",
+	"Tajaran fetishists",
 	"Bald thirty-year-olds",
 	"A Chief Engineer who can't setup the engine",
 	"Being sucked out into space",