Add WanVideo Lora Select node and related functionality. Fixes #266

- Implemented the WanVideo Lora Select node in Python with input handling for low memory loading and LORA syntax processing.
- Updated the JavaScript side to register the new node and manage its widget interactions.
- Enhanced constants files to include the new node type and its corresponding ID.
- Modified existing Lora Loader and Stacker references to accommodate the new node in various workflows and UI components.
- Added example workflow JSON for the new node to demonstrate its usage.

py/utils/constants.py

@@ -10,7 +10,8 @@ NSFW_LEVELS = {
 # Node type constants
 NODE_TYPES = {
     "Lora Loader (LoraManager)": 1,
-    "Lora Stacker (LoraManager)": 2
+    "Lora Stacker (LoraManager)": 2,
+    "WanVideo Lora Select (LoraManager)": 3
 }
 
 # Default ComfyUI node color when bgcolor is null