chore(lib): refactor libs and update Font Awesome 5.11.2 -> 5.12.1

assets/lib/forkawesome/_functions.scss

@@ -0,0 +1,11 @@
+// Functions
+// --------------------------
+
+// Helper function which adds quotes to preserve unicode values in CSS output.
+//
+// See: https://github.com/sass/sass/issues/1395
+// See: https://stackoverflow.com/questions/30421570/sass-unicode-escape-is-not-preserved-in-css-file
+
+@function fa-content($fa-var) {
+  @return unquote("\"#{$fa-var}\"");
+}