add mecha node pack (#767)

custom-node-list.json

@@ -10609,6 +10609,17 @@
             ],
             "install_type": "unzip",
             "description": "This is a node to convert an image into a CMYK Halftone dot image."
+        },
+        {
+            "author": "ljleb",
+            "title": "Mecha Merge Node Pack",
+            "id": "mecha",
+            "reference": "https://github.com/ljleb/comfy-mecha",
+            "files": [
+                "https://github.com/ljleb/comfy-mecha"
+            ],
+            "install_type": "git-clone",
+            "description": "Model merging node pack with a focus on low memory footprint."
         }
     ]
 }