Sdl backend (#670)

* [audio] added sdl audio backend and in-tree atrac9 decoder

* [input] replaced per-platform pad readers with sdl gamepad input

* [video] added sdl window and host display plumbing

* [gui] added host display options and per-game render settings

* [bink] synced host movie playback to the guest audio clock

* [cpu] hooked windows write faults into guest image tracking

* [perf] added guest and render profiling, reserved host cpu lanes

* [kernel] fixed stale pthread mutex handle alias

* [host] wired the sdl session, save-data paths and project references

* [audio] hoisted ajm trace stackalloc out of its loop

* [video] Add guest image sync setting

* [build] Strip native symbols

* reuse

src/SharpEmu.GUI/SharpEmu.GUI.csproj

@@ -9,16 +9,15 @@ SPDX-License-Identifier: GPL-2.0-or-later
        the executable is started without arguments. -->
   <PropertyGroup>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
-    <!-- Required by the source-generated LibraryImport stubs in the linked
-         controller readers below. -->
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <!-- Dependency-free; provides the BuildInfo provenance shown in the
        title bar. -->
   <ItemGroup>
-    <!-- The GUI owns the native presentation control while each game runs in
-         an isolated emulator process. -->
+    <!-- Games run in isolated SDL-window processes; the GUI owns launch and
+         session controls only. -->
+    <ProjectReference Include="..\SharpEmu.LibAtrac9\SharpEmu.LibAtrac9.csproj" />
     <ProjectReference Include="..\SharpEmu.Core\SharpEmu.Core.csproj" />
     <ProjectReference Include="..\SharpEmu.Libs\SharpEmu.Libs.csproj" />
     <ProjectReference Include="..\SharpEmu.Logging\SharpEmu.Logging.csproj" />