122 support gemini vertex ai

Created by: Mohammad-Masoomi-Homayoun

https://trello.com/c/cSF7JipU/122-support-gemini-vertex-ai

• Add application/json header
• Replace JsonOBJECT class with ObjectNode class
• Add format to response as json and remove extra information
• Add api key to the docker compose Create a simple RESTful AI API provider to connecting the Generative AI
• Refactor typo function name