feat(linux): add graphical platform services

tests/AcDream.App.Tests/Platform/GraphicalHostPlatformServicesTests.cs

@@ -0,0 +1,56 @@
+using AcDream.App.Platform;
+
+namespace AcDream.App.Tests.Platform;
+
+public sealed class GraphicalHostPlatformServicesTests
+{
+    [Fact]
+    public void CurrentPlatformOwnsPathsPacingAndNativeClosure()
+    {
+        GraphicalHostPlatformServices platform =
+            GraphicalHostPlatformServices.Resolve();
+
+        Assert.NotNull(platform.Paths);
+        Assert.NotNull(platform.FramePacingWaiters);
+        Assert.Equal(3, platform.NativeDependencies.Count);
+        Assert.All(
+            platform.NativeDependencies,
+            dependency =>
+            {
+                Assert.False(string.IsNullOrWhiteSpace(dependency.Feature));
+                Assert.False(string.IsNullOrWhiteSpace(
+                    dependency.PublishedFileName));
+            });
+
+        if (OperatingSystem.IsWindows())
+        {
+            Assert.Equal(
+                GraphicalHostOperatingSystem.Windows,
+                platform.OperatingSystem);
+            Assert.StartsWith(
+                "win-",
+                platform.RuntimeIdentifier,
+                StringComparison.Ordinal);
+            Assert.Contains(
+                platform.NativeDependencies,
+                dependency =>
+                    dependency.PublishedFileName == "glfw3.dll");
+            return;
+        }
+
+        if (OperatingSystem.IsLinux())
+        {
+            Assert.Equal(
+                GraphicalHostOperatingSystem.Linux,
+                platform.OperatingSystem);
+            Assert.Equal("linux-x64", platform.RuntimeIdentifier);
+            Assert.Contains(
+                platform.NativeDependencies,
+                dependency =>
+                    dependency.PublishedFileName == "libglfw.so.3");
+            return;
+        }
+
+        throw new PlatformNotSupportedException();
+    }
+}