LibGfx: Use the woff2 library to decode WOFF2 font files

This saves us the trouble of maintaining our own implementation,
and instantly brings us to full WOFF2 feature parity with others.

Co-Authored-By: Andrew Kaster <akaster@serenityos.org>

vcpkg.json

@@ -1,11 +1,17 @@
 {
+  "builtin-baseline": "01f602195983451bc83e72f4214af2cbc495aa94",
   "dependencies": [
-    "sqlite3"
+    "sqlite3",
+    "woff2"
   ],
   "overrides": [
     {
       "name": "sqlite3",
       "version": "3.45.3"
+    },
+    {
+      "name": "woff2",
+      "version": "1.0.2#4"
     }
   ]
 }