[BUG] Maniac can start without Medicine 3 (no sawing/exhumation)

[zoktiik]

Describe the bug

Depending on what job the Maniac is, he might not start with Medicine 3 (Journeyman), which is necessary to remove organs (or to cleanly saw a ribcage). This requirement came with the new surgery system. Giving the Maniac +3 ranks in Medicine outright might not be the best option, because him having any existing ranks would mean that he starts with Expert to Legendary in Medicine, sewing up his own torn artery in 2 "turns".

Or maybe we want Neo to possibly be that broken! I'll make a PR alongside this which implements the basic solution. Close it or merge it, it's up to you. There doesn't seem to be a proc to only add XP up to a certain skill, while preserving existing XP if higher. I'm not keen on writing one and touching the XP system in general.

Steps to Reproduce:

• Select a role that does not give any starting ranks in Medicine, or only gives Novice/Apprentice
• Spawn and roll Maniac antag, or become one midround via the Traitor Panel
• Collect your surgery kit by right clicking a statue
• Get a victim
• Make an incision [Novice], clamp bleeders/retract the chest [Apprentice] of said victim
• Silently fail to cut through the ribcage of your victim
• Break the victim's ribs and try to exhume the organs, but you still can't even do that
• Suspiciously grind Medicine with the needle for eons, or cry and refuse to WAKE UP I guess

[Azarak]

Resolved with https://github.com/Rotwood-Vale/Ratwood-Keep/pull/203