add(plugin): autofix-bot — DeepSource automated code review

Adapted from PR #23 by @jai-deepsource (DeepSource).
Original: https://github.com/anthropics/claude-plugins-official/pull/23

external_plugins/autofix-bot/hooks/hooks.json

@@ -0,0 +1,14 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/check-autofix.sh"
+          }
+        ]
+      }
+    ]
+  }
+}