v0.8.6

Added Llama3.1 from VertexAI (meta/llama3-405b-instruct-maas) https://console.cloud.google.com/vertex-ai/publishers/meta/model-garden/llama3-405b-instruct-maas?project=dng-production
Added GPT4-0-Mini from OpenAI (gpt-4o-mini-2024-07-18) https://platform.openai.com/docs/models/gpt-4o-mini
Added Delete action button on the Models LLM. Action is only allowed if the LLM is not being used by an Agent.