Allow Roo Code to send Agent requests to the Copilot API as a single API call not multiple, saving request usage.

[SeanBannister]

The only reason I don't use Roo over Copilot is when you use agent mode in Copilot every request the agent makes is counted as a single request. You're billed when you enter the prompt and hit enter. But in Roo every agent request is a separate API request to the Github Copilot API, so you're billed multiple requests.

With Copilot Chat now being open source (https://github.com/microsoft/vscode-copilot-chat/) is it possible to take a look at their code and figure out why their agent requests are billed as a single request. I analyzed the code based with AI and it told me the extension bundles agent requests whereas Roo sends them as single API requests.