This will add agents to txtai. We'll build on the Transformers Agents framework in combination with txtai's LLM pipeline.

The goals of this framework are:

• Easy-to-use
• Integrate with pipelines, workflows and embeddings databases
• Support all LLM backends (tranformers, llama.cpp, API integrations)
• Support use cases like self-correcting RAG, multi-source RAG and real-time data integration

The following issues cover this change.

• Add agents package to txtai #808
• Add documentation for txtai agents #809
• Add agents to Application and API interfaces #810
• Add what's new in txtai 8.0 notebook #811