Support for adding TODOs in bulk

[BharatKalluri]

There are a lot of times where there is a TODO list someone wrote in an message. This would be just a multiline text where each message would be one TODO.

current state: when a multi line string is pasted, HA adds a space in place of the new line and condenses the list into one todo.

It would be nice if HA understands this, shows a popup saying "Do you want to add X entries?" with options to add or cancel.