Gun refactor (#8301)

Co-authored-by: Kara <lunarautomaton6@gmail.com>
Co-authored-by: T-Stalker <le0nel_1van@hotmail.com>
Co-authored-by: T-Stalker <43253663+DogZeroX@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Client/Effects/EffectVisualsComponent.cs

@@ -0,0 +1,8 @@
+namespace Content.Client.Effects;
+
+[RegisterComponent]
+public sealed class EffectVisualsComponent : Component
+{
+    public float Length;
+    public float Accumulator = 0f;
+}