Syringe gun! (#32112)

* Init testing

* copyright

* oops

* Tracking the embed entity uid

* testing stuff for gradual injection

* work

* weh

* god save me

* bleh

* Yippee!

* Again

* Mini syringe ammo

* cleaning up

* mini syringes have a texture for fill amount

* -3 cool points :(

* hitboxes

* init cleanup

* much needed fixes

* Fixes

Content.Server/Chemistry/Components/SolutionInjectWhileEmbeddedComponent.cs

@@ -0,0 +1,24 @@
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+
+namespace Content.Server.Chemistry.Components;
+
+/// <summary>
+/// Used for embeddable entities that should try to inject a
+/// contained solution into a target over time while they are embbeded into.
+/// </summary>
+[RegisterComponent, AutoGenerateComponentPause]
+public sealed partial class SolutionInjectWhileEmbeddedComponent : BaseSolutionInjectOnEventComponent {
+        ///<summary>
+        ///The time at which the injection will happen.
+        ///</summary>
+        [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), AutoPausedField]
+        public TimeSpan NextUpdate;
+        
+        ///<summary>
+        ///The delay between each injection in seconds.
+        ///</summary>
+        [DataField]
+        public TimeSpan UpdateInterval = TimeSpan.FromSeconds(3);
+}
+