This commit introduces the `doImport` function, which allows importing
the content of a file directly into the "auto" chat session.
The imported content is added as a `ChatEntry` from GEMINI, structured
as a `ToolCall` with the name "Shell" and the file content as the input.
This allows external command outputs to be seamlessly integrated into
the chat history for context.
Jeff Carr
Castor Regex
Castor Gemini