[Feature] Functional Organs, also some Cyber Organs(updated)

[kyle2143]

Okay, I've made some updates, some requested and some that I just decided to do while bored and waiting for sprites. I still stand by my original work and think that it was still basically ready at that point, but having said that, there are more than a few changes made. I'll list all of the ones I can remember here.

 - Requested by Zewaka, I've added a new surgery tool for getting at the new organs, Garden Snips. The sprite was made by Kmc from discord and I did a bunch of recolors on the handle because I wasn't sure which would be easiest to see when laying on a floor or table. I'll update the surgery pathway in the original post so you can see what they'll look like now. I just want to go on the record saying it was very frustrating to change from the original intent-based paths to using this new tool.


- The other change that appears large was my addition of a new health scanner organ upgrade. This was kind of an afterthought as I previously had all reagent scan upgraded analyzers output the organ damage, but I thought that maybe it could get cluttered. So now there are health analyzers for: standard, reagent-scan, organ-scan, both-upgrades. The scanners have an obfuscated message showing damage instead of a number(minor, moderate, significant, critical) like how brain damage currently works, but the admin check_health power shows the damage number.


- I added a minimum stage duration for diseases. Partly for testing and partly because it always annoyed me that due to bad luck you can go from stage 1 to stage 5 in like 10 seconds. This can be removed I guess if you don't want it. Also, I considered making all the organ failure diseases have a chance to do organ damage to their specific organ and maybe another one at every stage, but right now it only damages the organ at the final stage. Not sure what's best from a balancing standpoint so I just decided to err on the side of caution and make them less dangerous.

- Also requested by Zewaka, Brain damage is converted to new organ system. Now for humans with an organHolder, all brain damage will physically damage the brain organ, instead of just a brain damage var on mob/living/carbon/human. I just did a simple override of the do brain damage proc somewhere in human.dm I think.

- Mostly converted the Heart to the new system. In terms of surgery pathing and damage. Hearts take damage during the heart failure disease at the final stage. 

- I realized that from the player's perspective, there are a lot of new things here regarding surgery, so I thought it best to write up an in-game surgery textbook that can be found in medbay along with the standard medical textbook. This surgery book describes some of the orginal surgery, and is mostly focused on the new stuff I've added in my patch. There are some extra little things about organ specifics and such I won't mention in this post, but I allude to in the book. Of course, you could just read the source code to learn all that anyway.


- You can sell these organs at the QM. I wanted to make it so that damaged organs are worth less than pristine ones, sort of like the material quality from mining. But that isn't in 2016, so I thought it best to leave it and hopefully someone in the know will leverage that system for organs. 

- Added cyber organs as fully as I'm willing to do at the moment: The first 3: Lungs, Stumach, and Liver were made by Sundance. The next 3: Kidneys, Pancreas, and Spleen were made by Navi.OS. The last 2: Intestines and Appendix were done by me. I just recolored the original sprites for those, if someone thinks they can do better, I encourage you to do so.
        (I removed the appendix image here since it's boring and I'm only allowed 10 images per post)

    - The cyber organs, all have functions that make them "superior" to meat organs. Each organ offers a slight stamina regen/maximum buff and some organs have unique functions to make them better than regular. For instance, Cyber Liver doesn't take damage from Ethanol overdoses like the regular liver does, it get's healed by it! And the Cyber Appendix doesn't explode killing you like the regular appendix, it had a chance to inject some weak healing chems into you if you go into crit.
    
    -Also Cyberorgans all take damage from emp grenades now. It's only 20 burn damage I think now, but it can be changed for balancing.