Make more jazzy related type support structs internal

Author: noelex

src/Rcl.NET/Introspection/JazzyMessageIntrospection.cs

@@ -11,11 +11,11 @@ internal unsafe class JazzyMessageIntrospection : IMessageIntrospection
     private readonly MessageMember_Jazzy* _members;
 
     public JazzyMessageIntrospection(TypeSupportHandle typeSupport)
-        : this((MessageTypeSupport_Jazzy*)typeSupport.GetMessageTypeSupport())
+        : this(typeSupport.GetMessageTypeSupport())
     {
     }
 
-    public JazzyMessageIntrospection(MessageTypeSupport_Jazzy* ts)
+    public JazzyMessageIntrospection(MessageTypeSupport* ts)
     {
         fixed (byte* id = TypeSupportIdentifier.Introspection)
         {

src/Rcl.NET/Introspection/MessageIntrospection.cs

@@ -41,11 +41,10 @@ public unsafe static IMessageIntrospection Create(MessageTypeSupport* typesuppor
         }
         else if (RosEnvironment.IsJazzy)
         {
-            return new JazzyMessageIntrospection((MessageTypeSupport_Jazzy*)typesupport);
+            return new JazzyMessageIntrospection(typesupport);
         }
         else
         {
-
             throw new NotSupportedException();
         }
     }

src/Rosidl.Runtime/Interop/TypeSupport.cs

@@ -29,7 +29,7 @@ public unsafe readonly struct MessageTypeSupport
 /// Contains rosidl message type support data
 /// </summary>
 [StructLayout(LayoutKind.Sequential)]
-public unsafe readonly struct MessageTypeSupport_Jazzy
+internal unsafe readonly struct MessageTypeSupport_Jazzy
 {
     /// <summary>
     /// String identifier for the type_support.
@@ -78,7 +78,7 @@ public unsafe readonly struct ServiceTypeSupport
 /// Contains rosidl service type support data
 /// </summary>
 [StructLayout(LayoutKind.Sequential)]
-public unsafe readonly struct ServiceTypeSupport_Jazzy
+internal unsafe readonly struct ServiceTypeSupport_Jazzy
 {
     /// <summary>
     /// String identifier for the type_support.
@@ -143,7 +143,7 @@ public unsafe readonly struct ActionTypeSupport
 /// Contains rosidl action type support data
 /// </summary>
 [StructLayout(LayoutKind.Sequential)]
-public unsafe readonly struct ActionTypeSupport_Jazzy
+internal unsafe readonly struct ActionTypeSupport_Jazzy
 {
     /// <summary>
     /// The native type support handle of the goal service.