Move solution and projects to src

src/Ryujinx.Input/KeyboardStateSnapshot.cs

@@ -0,0 +1,29 @@
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.Input
+{
+    /// <summary>
+    /// A snapshot of a <see cref="IKeyboard"/>.
+    /// </summary>
+    public class KeyboardStateSnapshot
+    {
+        private bool[] _keysState;
+
+        /// <summary>
+        /// Create a new <see cref="KeyboardStateSnapshot"/>.
+        /// </summary>
+        /// <param name="keysState">The keys state</param>
+        public KeyboardStateSnapshot(bool[] keysState)
+        {
+            _keysState = keysState;
+        }
+
+        /// <summary>
+        /// Check if a given key is pressed.
+        /// </summary>
+        /// <param name="key">The key</param>
+        /// <returns>True if the given key is pressed</returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool IsPressed(Key key) => _keysState[(int)key];
+    }
+}