Add pre-testing version of the webinterface

ChatTwo/Http/Util.cs

@@ -0,0 +1,37 @@
+namespace ChatTwo.Http;
+
+public static class WebserverUtil
+{
+    public static async Task<T> FrameworkWrapper<T>(Func<Task<T>> func)
+    {
+        return await Plugin.Framework.RunOnTick(func).ConfigureAwait(false);
+    }
+
+    public class DisposableWrapper : IDisposable {
+        private readonly Action Down;
+        private bool Disposed;
+
+        public DisposableWrapper(Action down) {
+            Down = down;
+        }
+
+        public void Dispose() {
+            if (Disposed) return;
+
+            Down();
+            Disposed = true;
+
+            GC.SuppressFinalize(this);
+        }
+    }
+}
+
+public static class AsyncUtils {
+    public static async Task<IDisposable> UseWaitAsync(this SemaphoreSlim semaphore, CancellationToken ct = default) {
+        await semaphore.WaitAsync(ct).ConfigureAwait(false);
+
+        return new WebserverUtil.DisposableWrapper(() => {
+            semaphore.Release();
+        });
+    }
+}