Add CORE body temperature and tire pressure data sources

[timklge]

Support for CORE temperature and tire pressure should be fairly easy to add, as the extension just requests the value from the karoo system, asking for the current "tire pressure" value instead of "heart rate" does not make much difference. The SDK has support for them: https://hammerheadnav.github.io/karoo-ext/karoo-ext/io.hammerhead.karooext.models/-data-type/-type/-c-o-r-e_-t-e-m-p.html