Reduce medical chemical effectiveness

NEEDS TESTING NOTE: This will need to be tested and feedback gathered about how it ends up playing out before a merge of the idea can be guaranteed, however, it is desired.

Nerf how effective medicinal chems are, and add depth to physical treatment. Readd infections, disinfectants to deal with it. Make suturing more important to close wounds, bleeding should be stemmed with stuff like haemostatic granules, other compressive haemostats. This should be given to medics + a limited supply in pouches to PFCs to stem rather than treat wounds.

Properly treating wounds should be done by medics. Major trauma - like bonebreaks, IB - should be reserved for doctor surgeries.

Allow medics to do some brutal groundside surgeries, like amputations, in the event of major infection to a limb.