Add 'backend/' from commit '040cfd7a75423d4e6136e58a67b40579af4ee966'

git-subtree-dir: backend
git-subtree-mainline: ab911955ed
git-subtree-split: 040cfd7a75

backend/global.json

@@ -0,0 +1,7 @@
+{
+  "sdk": {
+    "version": "8.0.0",
+    "rollForward": "latestMinor",
+    "allowPrerelease": false
+  }
+}