[Feature Request]: Add guides, references, best practices, and other documentation that may facilitate user journey with RAGFlow

[writinwaters]

Is there an existing issue for the same feature request?

• I have checked the existing issues.

Describe the feature you'd like

• RAGFlow overview covering its advantages and what differentiates it from its peer RAG apps.
• P0: Quickstart guide covering installation, a quick set up of a knowledge base, and starting a conversation. Create quickstart.md #743
• P1: User guide for establishing a knowledge base.
• P1: User guide for setting up an AI-based conversation.
• P1: User guide for integrating with third-party apps using conversation API.
• P1: User guide for uploading and managing files. Added file management guide #788
• P2: Configurations for both online LLMs and local LLM deployments (Ollama and Xinference)
• P2: Embedding model configurations.
• P2: Parsing configurations covering template options and chunking size settings.
• P2: Conversation configurations (assistant, prompt, and model).
• P2: General configurations (credential settings, environment variable settings, and system management settings).
• Best practices: choosing chunking templates.
• Best practices: choosing embedding models.
• Best practices: system tuning.
• FAQ (general + troubleshooting)
• References: Conversation API Reference
• References: File API Reference
• References: Deepdoc API Reference
• Use cases: Contracts
• Use cases: financial reports (including tables)
• Use cases: manuals
• Use cases: chatbot