Create and use Reachable primitive

.sqlx/query-ba09c191e2a83d4398b26888f041c93095ba82693b0b9c2c2eebd65078f7d168.json

@@ -0,0 +1,26 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT child, parent FROM commit_edges JOIN commits ON hash = child WHERE reachable = ? ORDER BY hash ASC ",
+  "describe": {
+    "columns": [
+      {
+        "name": "child",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "parent",
+        "ordinal": 1,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false
+    ]
+  },
+  "hash": "ba09c191e2a83d4398b26888f041c93095ba82693b0b9c2c2eebd65078f7d168"
+}