Refactor recipe metadata parser package for ComfyUI-Lora-Manager

- Implemented the base class `RecipeMetadataParser` for parsing recipe metadata from user comments.
- Created a factory class `RecipeParserFactory` to instantiate appropriate parser based on user comment content.
- Developed multiple parser classes: `ComfyMetadataParser`, `AutomaticMetadataParser`, `MetaFormatParser`, and `RecipeFormatParser` to handle different metadata formats.
- Introduced constants for generation parameters and valid LoRA types.
- Enhanced error handling and logging throughout the parsing process.
- Added functionality to populate LoRA and checkpoint information from Civitai API responses.
- Structured the output of parsed metadata to include prompts, LoRAs, generation parameters, and model information.

py/recipes/factory.py

@@ -0,0 +1,43 @@
+"""Factory for creating recipe metadata parsers."""
+
+import logging
+from .parsers import (
+    RecipeFormatParser,
+    ComfyMetadataParser,
+    MetaFormatParser,
+    AutomaticMetadataParser
+)
+from .base import RecipeMetadataParser
+
+logger = logging.getLogger(__name__)
+
+class RecipeParserFactory:
+    """Factory for creating recipe metadata parsers"""
+    
+    @staticmethod
+    def create_parser(user_comment: str) -> RecipeMetadataParser:
+        """
+        Create appropriate parser based on the user comment content
+        
+        Args:
+            user_comment: The EXIF UserComment string from the image
+            
+        Returns:
+            Appropriate RecipeMetadataParser implementation
+        """
+        # Try ComfyMetadataParser first since it requires valid JSON
+        try:
+            if ComfyMetadataParser().is_metadata_matching(user_comment):
+                return ComfyMetadataParser()
+        except Exception:
+            # If JSON parsing fails, move on to other parsers
+            pass
+            
+        if RecipeFormatParser().is_metadata_matching(user_comment):
+            return RecipeFormatParser()
+        elif AutomaticMetadataParser().is_metadata_matching(user_comment):
+            return AutomaticMetadataParser()
+        elif MetaFormatParser().is_metadata_matching(user_comment):
+            return MetaFormatParser()
+        else:
+            return None