Linux: Automatically increase vm.max_map_count if it's too low (#4702)

* memory: Check results of pinvoke calls

* Increase vm.max_map_count when running Ryujinx

* Add SupportedOSPlatform attribute for WindowsApiException

* Revert increasing vm.max_map_count via script

* Add LinuxHelper to detect and increase vm.max_map_count

With GUI dialogs, this should be a bit more user-friendly.

* Supply arguments as a list to RunPkExec

* Add error logging in case RunPkExec() fails

* Prevent Gtk from crashing

src/Ryujinx.Memory/MemoryManagerUnixHelper.cs

@@ -1,8 +1,11 @@
 using System;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 namespace Ryujinx.Memory
 {
+    [SupportedOSPlatform("linux")]
+    [SupportedOSPlatform("macos")]
     public static partial class MemoryManagerUnixHelper
     {
         [Flags]
@@ -41,6 +44,8 @@ namespace Ryujinx.Memory
             O_SYNC = 256,
         }
 
+        public const IntPtr MAP_FAILED = -1;
+
         private const int MAP_ANONYMOUS_LINUX_GENERIC = 0x20;
         private const int MAP_NORESERVE_LINUX_GENERIC = 0x4000;
         private const int MAP_UNLOCKED_LINUX_GENERIC = 0x80000;