Screen before counting Respiratory Rate.

[maximus1094]

Couldn't describe the issue in a better way :\

Before User starts counting Respiratory Rate (RR), create a screen to:

• Ask User if they have the mouth piece?
• Ask them if they are able to use it? (Should we?)
• Show a gif on how to use the mouthpiece.

Then depending on the choice above, the next screen will either be the Recorder or the Tap RR Counter.