Model Changing Function just like change_adapter

[MostlyKIGuess]

The feature should add the ability to change models within the Copilot adapter while in a chat session, without having to go to config.

New Keymap: gm (Change Model)

gm in chat buffers that allows users to change the model for the current chat session.

Added M.change_model function that:

• Restricts functionality to Copilot adapter only (I will try to get this for more models as well)
• Shows a selection menu with available models from the Copilot adapter
• Highlights the current model in the selection menu
• Updates the chat session with the new model
• Provides user feedback via notifications

[mamachanko]

@MostlyKIGuess even though it's for OpenRouter have a look at #1013 (comment) for a model switching function

[MostlyKIGuess]

Yeah no I found it, I am a bit stupid and was thinking about functionalities a bit too early. I can just ga enter to get it.

[jsit]

This is working for me in the meantime:

require("codecompanion").setup({
  interactions = {
    chat = {
      keymaps = {
        change_model = {
          modes = { n = "gm" },
          description = "Change Model",
          callback = function(chat)
            require("codecompanion.interactions.chat.keymaps.change_adapter").select_model(chat)
          end,
        },
      },
    },
  }
})