Google Tasks support #105

Google Tasks is a useful productivity application and provides an interesting interface between Gemini CLI and the human operator. I think it would be interesting to see if Gemini CLI with access to my TODO list can help me be more productive.

The following functions are recommended as a starting place:

• Listing all task lists
• Creating new task lists or tasks
• Getting details about a specific task
• Updating existing tasks (title, status, due date, schedule, etc.)
• Marking tasks as completed
• Deleting tasks or clearing all completed tasks from a list