Support for multiple ligature'd fonts

Refactors the ligature configuration to support more than just Iosevka
(uses Fira Code as the second font).

modules/ui/pretty-code/config.el

@@ -0,0 +1,11 @@
+;;; ui/pretty-code/config.el -*- lexical-binding: t; -*-
+
+(cond ((featurep! +fira)
+       (load! "+fira"))
+      ((featurep! +iosevka)
+       (load! "+iosevka")))
+
+;; When you get to the right edge, it goes back to how it normally prints
+(setq prettify-symbols-unprettify-at-point 'right-edge)
+
+(add-hook! 'after-change-major-mode-hook #'+pretty-code|init-pretty-symbols)