feat: add lscr upstream

templates/zot/config.json.j2

@@ -51,6 +51,19 @@
               "destination": "/ghcr"
             }
           ]
+        },
+        {
+          "urls": ["https://lscr.io"],
+          "onDemand": true,
+          "tlsVerify": true,
+          "maxRetries": 3,
+          "retryDelay": "5m",
+          "content": [
+            {
+              "prefix": "**",
+              "destination": "/lscr"
+            }
+          ]
         }
       ]
     }