Predict Injector (syringes), cleanup (#25235)

At least the mode/transfer amount logic. Actual transfer logic needs Bloodstream which I didn't wanna move into shared.

Content.Client/Chemistry/Components/InjectorComponent.cs

@@ -1,21 +0,0 @@
-using Content.Shared.Chemistry.Components;
-using Content.Shared.FixedPoint;
-
-namespace Content.Client.Chemistry.Components
-{
-    /// <summary>
-    /// Client behavior for injectors & syringes. Used for item status on injectors
-    /// </summary>
-    [RegisterComponent]
-    public sealed partial class InjectorComponent : SharedInjectorComponent
-    {
-        [ViewVariables]
-        public FixedPoint2 CurrentVolume;
-        [ViewVariables]
-        public FixedPoint2 TotalVolume;
-        [ViewVariables]
-        public InjectorToggleMode CurrentMode;
-        [ViewVariables(VVAccess.ReadWrite)]
-        public bool UiUpdateNeeded;
-    }
-}