Add sqlx cache to allow compile time verification in CI

.sqlx/query-38fb9412d5c6c46dc9d136caa6a58eae2d1782076f0cf7e7f4aeb362b5370acb.json

@@ -0,0 +1,20 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT count(name) as count from users",
+  "describe": {
+    "columns": [
+      {
+        "name": "count",
+        "ordinal": 0,
+        "type_info": "Integer"
+      }
+    ],
+    "parameters": {
+      "Right": 0
+    },
+    "nullable": [
+      false
+    ]
+  },
+  "hash": "38fb9412d5c6c46dc9d136caa6a58eae2d1782076f0cf7e7f4aeb362b5370acb"
+}