make syndie bag and rigs explosion resistant (#22088)

* remove empty file real

* support explosion resistance for non-worn things

* remove redundant entitystorage resistance

* port entitystorage optimisation to apply for everything with 100% resistance

* add explosion resistance for bag contents

* make thing reusable

* add resistance to chest rig too

* medical chest rig too

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Server/Explosion/Components/ExplosionResistanceComponent.cs

@@ -5,7 +5,9 @@ using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototy
 namespace Content.Server.Explosion.Components;
 
 /// <summary>
-///     Component that provides entities with explosion resistance.
+/// Component that provides entities with explosion resistance.
+/// By default this is applied when worn, but to solely protect the entity itself and
+/// not the wearer use <c>worn: false</c>.
 /// </summary>
 /// <remarks>
 ///     This is desirable over just using damage modifier sets, given that equipment like bomb-suits need to
@@ -21,6 +23,20 @@ public sealed partial class ExplosionResistanceComponent : Component
     [DataField("damageCoefficient")]
     public float DamageCoefficient = 1;
 
+    /// <summary>
+    /// When true, resistances will be applied to the entity wearing this item.
+    /// When false, only this entity will get th resistance.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public bool Worn = true;
+
+    /// <summary>
+    /// Examine string for explosion resistance.
+    /// Passed <c>value</c> from 0 to 100.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public LocId Examine = "explosion-resistance-coefficient-value";
+
     /// <summary>
     ///     Modifiers specific to each explosion type for more customizability.
     /// </summary>