Sequential Task List executor

Sequential task list execution should be implemented. This includes an endpoint to create the task list and add it to a queue and the executor, which retrieves the task list and executes the tasks inside sequentially.

Sequential execution means the input for the task list is passed to the first task, then the result of the first task is passed to the second task as input and the second task is executed and so on.

Results of the execution of each task within a task list are stored in the cache individually.