Add nlohmann-json to vcpkg.json dependencies

Author: CrSjimo

scripts/vcpkg-manifest/vcpkg.json

@@ -27,7 +27,8 @@
             "name": "glib",
             "platform": "linux"
         },
-        "wolf-midi"
+        "wolf-midi",
+        "nlohmann-json"
     ],
     "vcpkg-configuration": {
         "overlay-ports": [
@@ -37,4 +38,4 @@
             "../vcpkg/triplets"
         ]
     }
-}
+}