provide option for pressure conversion

[phu9Suop]

Expected behaviour

display an option to convert pressures

Actual behaviour

none

Steps to reproduce the behaviour

open mate , click conversion button, no item pressures ("Druck") available

MATE general version

afaik all

Package version

all

Linux Distribution

all

Link to bugreport of your Distribution (requirement)

seee https://en.wikipedia.org/wiki/Pressure
please provide SI unit Pascal, HektoPascal, KiloPascal, MegaPascal, mmHg =Torr, bar, psi, others

I will gladly assist, if so introduces me into the corresponding files

[mbkma]

looking at the code it might be enough to add pressure conversion here: https://github.com/mate-desktop/mate-calc/blob/master/src/unit-manager.c#L51

[todool]

If still interested I will provide a pull request with the pressure conversions included the coming weeks,

[phu9Suop]

I would appreciate that