Implement ALPC port abstraction and implement DNS resolver port (#558)

This PR introduces an abstraction for ALPC ports to make them easier to
manage in the future, and implements the DNS resolver port, at least
enough to get host address queries working.
There's a lot of code in this PR that I'm not very confident about, so
don't hesitate on the feedback 😄

<img width="1377" height="624" alt="image"
src="https://github.com/user-attachments/assets/4d56b84d-4b87-42ed-9bfa-be04dbbf3735"
/>

src/common/platform/platform.hpp

@@ -26,6 +26,7 @@
 #include "network.hpp"
 #include "threading.hpp"
 #include "window.hpp"
+#include "port.hpp"
 
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop

src/common/platform/port.hpp

@@ -0,0 +1,80 @@
+#pragma once
+
+// NOLINTBEGIN(modernize-use-using,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
+
+#define LPC_REQUEST            1
+#define LPC_REPLY              2
+#define LPC_DATAGRAM           3
+#define LPC_LOST_REPLY         4
+#define LPC_PORT_CLOSED        5
+#define LPC_CLIENT_DIED        6
+#define LPC_EXCEPTION          7
+#define LPC_DEBUG_EVENT        8
+#define LPC_ERROR_EVENT        9
+#define LPC_CONNECTION_REQUEST 10
+#define LPC_NO_IMPERSONATE     0x4000
+#define LPC_KERNELMODE_MESSAGE 0x8000
+
+#define LpcpGetMessageType(x)  ((x)->u2.s2.Type & ~LPC_KERNELMODE_MESSAGE)
+
+struct PORT_MESSAGE64
+{
+    union
+    {
+        struct
+        {
+            CSHORT DataLength;
+            CSHORT TotalLength;
+        } s1;
+
+        ULONG Length;
+    } u1;
+
+    union
+    {
+        struct
+        {
+            CSHORT Type;
+            CSHORT DataInfoOffset;
+        } s2;
+
+        ULONG ZeroInit;
+    } u2;
+
+    union
+    {
+        CLIENT_ID64 ClientId;
+        double DoNotUseThisField;
+    };
+
+    ULONG MessageId;
+
+    union
+    {
+        EmulatorTraits<Emu64>::SIZE_T ClientViewSize; // only valid for LPC_CONNECTION_REQUEST messages
+        ULONG CallbackId;                             // only valid for LPC_REQUEST messages
+    };
+};
+
+struct ALPC_MESSAGE_ATTRIBUTES
+{
+    ULONG AllocatedAttributes;
+    ULONG ValidAttributes;
+};
+
+template <typename Traits>
+struct PORT_DATA_ENTRY
+{
+    typename Traits::PVOID Base;
+    ULONG Size;
+};
+
+template <typename Traits>
+struct ALPC_SECURITY_ATTR
+{
+    ULONG Flags;
+    typename Traits::PVOID SecurityQos;
+    typename Traits::HANDLE ContextHandle;
+};
+
+// NOLINTEND(modernize-use-using,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)

src/common/platform/process.hpp

@@ -983,58 +983,6 @@ struct CLIENT_ID64
     DWORD64 UniqueThread;
 };
 
-struct PORT_MESSAGE64
-{
-    union
-    {
-        struct
-        {
-            CSHORT DataLength;
-            CSHORT TotalLength;
-        } s1;
-
-        ULONG Length;
-    } u1;
-
-    union
-    {
-        struct
-        {
-            CSHORT Type;
-            CSHORT DataInfoOffset;
-        } s2;
-
-        ULONG ZeroInit;
-    } u2;
-
-    union
-    {
-        CLIENT_ID64 ClientId;
-        double DoNotUseThisField;
-    };
-
-    ULONG MessageId;
-
-    union
-    {
-        EmulatorTraits<Emu64>::SIZE_T ClientViewSize; // only valid for LPC_CONNECTION_REQUEST messages
-        ULONG CallbackId;                             // only valid for LPC_REQUEST messages
-    };
-};
-
-struct ALPC_MESSAGE_ATTRIBUTES
-{
-    ULONG AllocatedAttributes;
-    ULONG ValidAttributes;
-};
-
-template <typename Traits>
-struct PORT_DATA_ENTRY
-{
-    typename Traits::PVOID Base;
-    ULONG Size;
-};
-
 template <typename Traits>
 struct EMU_RTL_SRWLOCK
 {