improve: use channel.list instead of config.ini's channel_url.list

add: tutorial channel

node_db/tutorial/custom-node-list.json

@@ -0,0 +1,34 @@
+{
+    "custom_nodes": [
+        {
+            "author": "Suzie1",
+            "title": "Guide To Making Custom Nodes in ComfyUI",
+            "reference": "https://github.com/Suzie1/ComfyUI_Guide_To_Making_Custom_Nodes",
+            "files": [
+                "https://github.com/Suzie1/ComfyUI_Guide_To_Making_Custom_Nodes"
+            ],
+            "install_type": "git-clone",
+            "description": "There is a small node pack attached to this guide. This includes the init file and 3 nodes associated with the tutorials."
+        },
+        {
+            "author": "dynamixar",
+            "title": "Atluris",
+            "reference": "https://github.com/dynamixar/Atluris",
+            "files": [
+                "https://github.com/dynamixar/Atluris"
+            ],
+            "install_type": "git-clone",
+            "description": "Nodes:Random Line"
+        },
+        {
+            "author": "et118",
+            "title": "ComfyUI-ElGogh-Nodes",
+            "reference": "https://github.com/et118/ComfyUI-ElGogh-Nodes",
+            "files": [
+                "https://github.com/et118/ComfyUI-ElGogh-Nodes"
+            ],
+            "install_type": "git-clone",
+            "description": "Nodes:ElGogh Positive Prompt, ElGogh NEGATIVE Prompt, ElGogh Empty Latent Image, ElGogh Checkpoint Loader Simple"
+        }
+    ]
+}

node_db/tutorial/extension-node-map.json

@@ -0,0 +1 @@
+{}

node_db/tutorial/model-list.json

@@ -0,0 +1 @@
+{}

node_db/tutorial/scan.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+source ../../../../venv/bin/activate
+rm .tmp/*.py > /dev/null
+python ../../scanner.py