feat(infra): integrate PaddleOCR's PP-StructureV3 as a document parser backend (#714)

docker/.env.debug.example

@@ -140,6 +140,12 @@ export VE_OCR_SK=""
 # paddleocr ocr
 export PADDLEOCR_OCR_API_URL=""
 
+# Settings for Document Parser
+# Supported parser types: `builtin`, `paddleocr`
+export PARSER_TYPE="builtin"
+# paddleocr structure
+export PADDLEOCR_STRUCTURE_API_URL=""
+
 # Settings for Model
 # Model for agent & workflow
 # add suffix number to add different models