[ Docs ] Added new LLMs to supported LLMs list on README

[ShadowArcanist]

Pull Request Type

• [x] 📝 docs

What is in this change?

• [x] Added KoboldCPP to supported LLMs list
• [x] Added Cohere to supported LLMs list
• [x] Added Generic OpenAI to supported LLMs list
• [x] Added Cohere to supported Embedding models list

Additional Information

Added few empty lines on the README file to make the code easier to read