Please enable copilot chat and agent support

[gpetrov]

The current implementation of the github language server has only the inline completion enabled which without any additional prompting is pretty useless.

It seems that the copilot chat and agent support is already included in the language server, but not exposed for usage.

So please expose the copilot chat and agent support so we can do more advanced integrations in other code editors.

[tpope]

Request noted. Other interested parties are encouraged to 👍 this issue.