Medical Vitals - Add API for breathing effectiveness

[SpicyBagpipes]

When merged this pull request will:

• Move a single number to a unit variable

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[SpicyBagpipes]

Would like to move more of oxygen to API but this is perfectly fine for my purposes

[BrettMayson]

I think we should add a proper API

Doing more with this is on my TODO list, but I have a long TODO list

Adding a variable in like this is not ideal and something that will either need to be supported in the future, or break things when removed

[SpicyBagpipes]

I think we should add a proper API

Doing more with this is on my TODO list, but I have a long TODO list

Adding a variable in like this is not ideal and something that will either need to be supported in the future, or break things when removed

What would you suggest? The only other idea I had was something along the lines of duty factors for oxygen but with how limited in scope current SPO2 implementation is I do not see many (any) hooks for API in it

[BrettMayson]

Yes, that's how I would propose doing it, but an API needs to be added to do so