Shell May Cry: A comprehensive rework of synthetics. (#20721)

https://www.youtube.com/watch?v=9mPvZ96pHJI

A pull request commissioned by the Synthetic Lore Team to
comprehensively rework synthetics (read: IPCs) and how they work in
Aurora. The objective is to make IPCs as unique as possible from humans,
upgrading the robotic feel and atmosphere, while also preserving a good
sense of balance in-game.

Key features:

- A comprehensive expansion of synthetic organs, all of which now
fulfill a purpose: hydraulics, cooling units, power systems, actuators,
diagnostics units.
- Customizable organs with benefits and drawbacks, such as with cooling
units and power systems.
- Unique ways to repair the organs and more involved steps.
- Unique damage mechanics - every organ has wiring and electronics which
affect its functioning, and they are defended by plating which provides
natural armour.
- Improved and immersive diagnostics.
- Unique features, benefits, and drawbacks for every IPC frame.
- A rework of the positronic brain, which can be either destroyed or
shut down, alongside effects caused by low integrity.
- A rework of how EMPs affect IPC organs.
- Non-binary damage states for each organ.

To-do:

- [x] Finish the unique features for each frame.
- [x] Look into if mechanical synthskin is possible.
- [x] Power system.
- [x] Posibrain mechanics.
- [ ] Passive cooling expansion.
- [x] EMP mechanics.
- [x] Repair mechanics.
- [x] Mob weight mechanics.
- [ ] Gurney for heavy mobs.
- [x] New augments.
- [ ] IPC tag scanning and flashing.

---------

Signed-off-by: Werner <1331699+Arrow768@users.noreply.github.com>
Co-authored-by: Matt Atlas <liermattia@gmail.com>
Co-authored-by: Geeves <22774890+Geevies@users.noreply.github.com>
Co-authored-by: Werner <1331699+Arrow768@users.noreply.github.com>

code/modules/nano/modules/human_appearance.dm

@@ -220,6 +220,18 @@
 				var/modification = tgui_input_list(owner, "Select a Modification", "Organ Modification", O.possible_modifications)
 				owner.change_organ(organ, modification)
 
+		if("organ_preset")
+			if(can_change(APPEARANCE_PROSTHETICS))
+				var/organ = tgui_input_list(owner, "Select an Organ", "Organ Presets", valid_organs)
+				var/obj/item/organ/internal/machine/O = owner.internal_organs_by_name[organ]
+				var/list/possible_presets = list()
+				for(var/P in O.organ_presets)
+					var/singleton/synthetic_organ_preset/preset = GET_SINGLETON(P)
+					possible_presets[preset.name] = preset
+				var/singleton/synthetic_organ_preset/chosen_preset = tgui_input_list(owner, "Select a Preset", "Organ Presets", possible_presets)
+				if(chosen_preset)
+					O.apply_preset_data(chosen_preset)
+
 /datum/tgui_module/appearance_changer/ui_interact(var/mob/user, var/datum/tgui/ui)
 	ui = SStgui.try_update_ui(user, src, ui)
 	if(!ui)