Added packaging information to package.json.

package.json

@@ -48,5 +48,15 @@
         "ts-node": "10.4.0",
         "ts-mockito": "2.6.1",
         "typescript": "4.4.4"
-    }
+    },
+    "files": [
+        "build",
+        "config/*.default",
+        "data/*.sql",
+        "docs",
+        "locale",
+        "LICENSE",
+        "README.md"
+    ],
+    "private": true
 }