Feature request: reminder function

@johnb0647
The have way exists alreard for the search.

Search all todos
type:todo

Search all open todos
type:todo iscompleted:0

@naviji is it possible to implement the same search functions (todo_due:day-2, ...) for todo_due like for created or updated.

So that the following searches are possible:

Search todos for the next 7 Days
todo_due:day+7

Search missed todos
type:todo iscompleted:0 todo_due:day-1000

In the Noteoverviw plugin thread there was also a question about this function.