tty: add color support for mosh

PR-URL: #27843
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>

Author: aditya1906

lib/internal/tty.js

@@ -53,6 +53,7 @@ const TERM_ENVS = {
   'konsole': COLORS_16,
   'kterm': COLORS_16,
   'mlterm': COLORS_16,
+  'mosh': COLORS_16m,
   'putty': COLORS_16,
   'st': COLORS_16,
   // https://github.com/da-x/rxvt-unicode/tree/v9.22-with-24bit-color