Protected ranges could also just create a warning

[jlumbroso]

I just noticed that the "warning" version of protected ranges functions this way:

This both highlights that there is protected content, but it gives the user the opportunity to override the warning (including for the next 5 minutes).

I learned more about the possibilities of protecting cells/ranges.

The code to add protected ranges is currently inside a method in _sheets.py. It may be helpful to turn it into a helper method that can be called from other methods (or not).

[josephlou5]

What is the exact issue here? Do you just want the code for creating a protected range to be taken it out into its own helper function?