Build stable Ghostty and its split packages for aarch64

pkgbuilds/ghostty/.omarchy/package.json

@@ -0,0 +1,9 @@
+{
+  "source": "local",
+  "upstream": {
+    "watch": {
+      "pattern": "v(?P<version>[0-9]+(?:\\.[0-9]+)*)",
+      "git_tags": "https://github.com/ghostty-org/ghostty.git"
+    }
+  }
+}