* Fix medical menu not reopening regardless of setting
* Ensure no heartrate or bloodpressure on death
* Fix status variables not being reset on respawn
* Fix JIP resetting status variables for all units
* Fix heart rate adjustment overflow and
* Minor code clean up
* refactor(medical): shorten some code
* refactor(medical): use macros for tourniquets
* refactor(medical): pull cache expiry values into script_macros_medical
Improves the way medical is storing variables in object space by having
a common list of variables names as macros. Makes the code a bit cleaner
and ensured consistency across components. Also a handy reference for
when working on medical to see what values are all stored.
