All at once weight tracking

[chaptergy]

Hello,
It would be great to be able to track all data on the weight tracking screen at once. Meaning adding an add button to the weight track screen which opens a popup with inputs for weight, fat, muscles and water. This would also enable the possibility to input the fat, muscles and water in kg, which is then automatically converted to %, as some scales only show the data in kg.

I could also check whether I am able to implement this myself and create a pull request.

Thank you.