Initial commit: Info-Beamer Streaming Channel System

- Complete Flask web application for digital signage management
- Streaming channels for organized content delivery
- User authentication with admin/user roles
- Bootstrap UI with light/dark theme support
- File upload and management system
- Activity logging and monitoring
- API endpoints for Info-Beamer device integration
- Database models for channels, content, users, and activity logs

infobeamer-node.json

@@ -0,0 +1,21 @@
+{
+  "comment": "Info-Beamer node.json configuration example",
+  "options": [
+    {
+      "title": "Content Server URL",
+      "ui_width": 12,
+      "name": "server_url",
+      "type": "string",
+      "hint": "URL of your content server",
+      "default": "http://localhost:5000"
+    },
+    {
+      "title": "Refresh Interval",
+      "ui_width": 6,
+      "name": "refresh_interval",
+      "type": "integer",
+      "hint": "How often to check for new content",
+      "default": 60
+    }
+  ]
+}