Fix some friend access violations by allowing others access. (#8594)

Rename Friend attribute to Access attribute.
Updates submodule to v0.21.0.0 as well.

Content.Server/Body/Components/BloodstreamComponent.cs

@@ -8,7 +8,7 @@ using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototy
 
 namespace Content.Server.Body.Components
 {
-    [RegisterComponent, Friend(typeof(BloodstreamSystem))]
+    [RegisterComponent, Access(typeof(BloodstreamSystem))]
     public sealed class BloodstreamComponent : Component
     {
         public static string DefaultChemicalsSolutionName = "chemicals";
@@ -129,6 +129,7 @@ namespace Content.Server.Body.Components
         ///     Internal solution for reagent storage
         /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
+        [Access(typeof(BloodstreamSystem), Other = AccessPermissions.ReadExecute)] // FIXME Friends
         public Solution ChemicalSolution = default!;
 
         /// <summary>

Content.Server/Body/Components/BrainComponent.cs

@@ -2,7 +2,7 @@
 
 namespace Content.Server.Body.Components
 {
-    [RegisterComponent, Friend(typeof(BrainSystem))]
+    [RegisterComponent, Access(typeof(BrainSystem))]
     public sealed class BrainComponent : Component
     {
     }

Content.Server/Body/Components/LungComponent.cs

@@ -5,10 +5,11 @@ using Content.Shared.Chemistry.Components;
 
 namespace Content.Server.Body.Components;
 
-[RegisterComponent, Friend(typeof(LungSystem))]
+[RegisterComponent, Access(typeof(LungSystem))]
 public sealed class LungComponent : Component
 {
     [DataField("air")]
+    [Access(typeof(LungSystem), Other = AccessPermissions.ReadExecute)] // FIXME Friends
     public GasMixture Air { get; set; } = new()
     {
         Volume = 6,
@@ -16,5 +17,6 @@ public sealed class LungComponent : Component
     };
 
     [ViewVariables]
+    [Access(typeof(LungSystem), Other = AccessPermissions.ReadExecute)] // FIXME Friends
     public Solution LungSolution = default!;
 }

Content.Server/Body/Components/MetabolizerComponent.cs

@@ -9,7 +9,7 @@ namespace Content.Server.Body.Components
     /// <summary>
     ///     Handles metabolizing various reagents with given effects.
     /// </summary>
-    [RegisterComponent, Friend(typeof(MetabolizerSystem))]
+    [RegisterComponent, Access(typeof(MetabolizerSystem))]
     public sealed class MetabolizerComponent : Component
     {
         public float AccumulatedFrametime = 0.0f;
@@ -40,6 +40,7 @@ namespace Content.Server.Body.Components
         ///     List of metabolizer types that this organ is. ex. Human, Slime, Felinid, w/e.
         /// </summary>
         [DataField("metabolizerTypes", customTypeSerializer:typeof(PrototypeIdHashSetSerializer<MetabolizerTypePrototype>))]
+        [Access(typeof(MetabolizerSystem), Other = AccessPermissions.ReadExecute)] // FIXME Friends
         public HashSet<string>? MetabolizerTypes = null;
 
         /// <summary>

Content.Server/Body/Components/RespiratorComponent.cs

@@ -3,7 +3,7 @@ using Content.Shared.Damage;
 
 namespace Content.Server.Body.Components
 {
-    [RegisterComponent, Friend(typeof(RespiratorSystem))]
+    [RegisterComponent, Access(typeof(RespiratorSystem))]
     public sealed class RespiratorComponent : Component
     {
         /// <summary>

Content.Server/Body/Components/StomachComponent.cs

@@ -3,7 +3,7 @@ using Content.Shared.FixedPoint;
 
 namespace Content.Server.Body.Components
 {
-    [RegisterComponent, Friend(typeof(StomachSystem))]
+    [RegisterComponent, Access(typeof(StomachSystem))]
     public sealed class StomachComponent : Component
     {
         public float AccumulatedFrameTime;

Content.Server/Body/Components/ThermalRegulatorComponent.cs

@@ -3,7 +3,7 @@ using Content.Server.Body.Systems;
 namespace Content.Server.Body.Components;
 
 [RegisterComponent]
-[Friend(typeof(ThermalRegulatorSystem))]
+[Access(typeof(ThermalRegulatorSystem))]
 public sealed class ThermalRegulatorComponent : Component
 {
     /// <summary>