Make melee damage not go through MeleeHitEvent.cs (#16881)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Shared/Weapons/Melee/Components/BonusMeleeDamageComponent.cs

@@ -0,0 +1,17 @@
+using Content.Shared.Damage;
+
+namespace Content.Shared.Weapons.Melee.Components;
+
+/// <summary>
+/// This is used for adding in bonus damage via <see cref="GetMeleeWeaponEvent"/>
+/// This exists only for event relays and doing entity shenanigans.
+/// </summary>
+[RegisterComponent, NetworkedComponent]
+public sealed class BonusMeleeDamageComponent : Component
+{
+    /// <summary>
+    /// The damage that will be applied.
+    /// </summary>
+    [DataField("bonusDamage", required: true)]
+    public DamageSpecifier BonusDamage = default!;
+}