Hypospray buff and MOD injector bug fix (#5059)

* Fixes MOD hypospray using incorrect fill sprites (#84875)

After the syringe resprite their fill sprites no longer fit MOD hypos,
so I added proper fill textures for them.
Closes #81469

Current ones look jank and are going outside of the hypo

:cl:
image: MOD hyposprays no longer use syringe fill sprites
/:cl:

* Increases CMO hypospray capacity + adds microdosing (#79813)

## About The Pull Request

Increases the reagent capacity of the CMO hypospray to 60u and adds the
ability to inject smaller amounts of reagents, like a dropper can.

You still only get 30u of omnizine, sorry.

## Why It's Good For The Game

The hypospray is pretty dogwater as a medical tool. The tiny 30u
capacity means you'll be refilling it constantly, making it unattractive
compared to medigels or pills for everything but murder. These changes
solve that issue by making the capacity less miserable and also give it
a unique niche of being able to efficiently administer medicines via
microdosing.

## Changelog
:cl: Bumtickley00
balance: The CMO's hypospray now holds 60u, and can be set to inject
smaller amounts of reagents
/:cl:

---------

Co-authored-by: bumtickley00 <[email protected]>

* Update modules_medical.dm

---------

Co-authored-by: SmArtKar <[email protected]>
Co-authored-by: Jay <[email protected]>
Co-authored-by: bumtickley00 <[email protected]>

Author: 4 people

code/modules/mod/modules/modules_medical.dm

@@ -125,9 +125,15 @@
 	volume = 30
 	inject_flags = INJECT_CHECK_PENETRATE_THICK
 
-///Organ Thrower - Lets you shoot organs, immediately replacing them if the target has the organ manipulation surgery.
+/obj/item/reagent_containers/syringe/mod/update_reagent_overlay()
+	if(reagents?.total_volume)
+		var/mutable_appearance/filling_overlay = mutable_appearance('icons/obj/medical/reagent_fillings.dmi', "mod[get_rounded_vol()]")
+		filling_overlay.color = mix_color_from_reagents(reagents.reagent_list)
+		. += filling_overlay
+
+///Organizer - Lets you shoot organs, immediately replacing them if the target has the organ manipulation surgery.
 /obj/item/mod/module/organ_thrower
-	name = "MOD organ thrower module"
+	name = "MOD organizer module"
 	desc = "A device recovered from a crashed Interdyne Pharmaceuticals vessel, \
 		this module has been unearthed for better or for worse. \
 		It's an arm-mounted device utilizing technology similar to modern-day part replacers, \

code/modules/reagents/reagent_containers/hypospray.dm

@@ -62,6 +62,8 @@
 
 
 /obj/item/reagent_containers/hypospray/cmo
+	volume = 60
+	possible_transfer_amounts = list(1,3,5)
 	list_reagents = list(/datum/reagent/medicine/omnizine = 30)
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	ignore_flags = 1