Feat: add TCADP Parser (#10775)

### What problem does this PR solve?

This PR adds a new TCADP (Tencent Cloud Advanced Document Processing)
parser to RAGFlow, enabling users to leverage Tencent Cloud's document
parsing capabilities for more accurate and structured document
processing. The implementation includes:
New TCADP Parser: A complete implementation of Tencent Cloud's document
parsing API without SDK dependency
Configuration Support: Added configuration options in service_conf.yaml
for Tencent Cloud API credentials
Frontend Integration: Updated UI components to support the new TCADP
parser option
Error Handling: Comprehensive error handling and retry mechanisms for
API calls
Result Processing: Support for both SSE streaming and JSON response
formats from Tencent Cloud API

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/pages/agent/form/parser-form/pdf-form-fields.tsx

@@ -20,7 +20,8 @@ export function PdfFormFields({ prefix }: CommonProps) {
     return (
       !isEmpty(parseMethod) &&
       parseMethod !== ParseDocumentType.DeepDOC &&
-      parseMethod !== ParseDocumentType.PlainText
+      parseMethod !== ParseDocumentType.PlainText &&
+      parseMethod !== ParseDocumentType.TCADPParser
     );
   }, [parseMethod]);