Make Syringe Guns shoot Syringes in Inject mode (#23088)

* Automatically set launched syringes to inject

* Implement for normal syringe guns too

* Put mech syringe back to draw mode if emptied when shot

* Use syringe's defines

* Move defines

* update paradise.dme

* Add comment for defines

* do not set RSG syringes to inject

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Co-authored-by: Arthri <41360489+a@users.noreply.github.com>

code/modules/projectiles/guns/syringe_gun.dm

@@ -28,6 +28,7 @@
 
 	chambered.BB = new S.projectile_type(src)
 	S.reagents.trans_to(chambered.BB, S.reagents.total_volume)
+	S.mode = SYRINGE_INJECT
 	chambered.BB.name = S.name
 
 	syringes.Remove(S)
@@ -55,6 +56,7 @@
 		// Remove the chambered syringe only if there's no syringe left
 		S = new()
 		chambered.BB.reagents.trans_to(S, chambered.BB.reagents.total_volume)
+		S.mode = SYRINGE_INJECT
 		qdel(chambered.BB)
 		chambered.BB = null
 		process_chamber()