Tasks: Filter tasks that are waiting for user input #19324
Description
Depends on coder/internal#899
User Story
As user, I want to easily filter the tasks that are waiting for my input, so I can address them.
Acceptance Criteria
- Add "All" and "Waiting for Input" tabs
- Display the number of idle tasks in "Waiting for Input" tab
- Correctly filter tasks by the selected tab
- If there are no idle tasks, the "Waiting for Input" tab should be disabled
Design
