Move to VCPKG for mo2-cmake. (#151)

* Oblivion Remastered updates
- Handle invalid JSON
- Remove outdated pak sorting code
- Start from 8999 for pak directories
- Leaves space for early loaders
- Update MagicLoader handling for more dir names

---------

Co-authored-by: Jeremy Rimpo <jeremy.rimpo@servermonkey.com>

vcpkg.json

@@ -0,0 +1,17 @@
+{
+  "features": {
+    "standalone": {
+      "description": "Build Standalone.",
+      "dependencies": [
+        "mo2-cmake"
+      ]
+    }
+  },
+  "vcpkg-configuration": {
+    "default-registry": {
+      "kind": "git",
+      "repository": "https://github.com/ModOrganizer2/vcpkg-registry",
+      "baseline": "69db61b22147b14ad66fd05cf798d855f6d68c12"
+    }
+  }
+}