starship: Enable terraform and typst modules

Explicitly enable terraform and typst version displays (if in directory
with terraform state files or .typ files for typst), and change the
symbol for the typst module to a feather (which is much nicer than the
plain 't' it would display otherwise).

terminal/.config/starship.toml

@@ -21,6 +21,8 @@ $go\
 $lua\
 $nodejs\
 $python\
+$terraform\
+$typst\
 $package
 """
 
@@ -81,6 +83,13 @@ symbol = " 󱍔 "
 style = 'bold yellow'
 format = "[$symbol]($style)"
 
+[terraform]
+disabled = false
+
+[typst]
+disabled = false
+symbol = '󰛓 '
+
 [custom.shell_bash_indicator]
 command = 'echo '
 when = ' test "$STARSHIP_SHELL" = "bash" '