feat: start and stop hook

Runtime.meta

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Runtime/Event.cs

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+using System.Runtime.InteropServices;
+
+namespace SkyHook
+{
+  [StructLayout(LayoutKind.Sequential)]
+  public struct SkyHookEvent
+  {
+    public ulong Time;
+    public short Type;
+    public uint Key;
+  }
+
+  public enum EventType
+  {
+    KeyPressed,
+    KeyReleased
+  }
+}

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Runtime/SkyHook.Unity.asmdef

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+{
+    "name": "SkyHook.Unity",
+    "rootNamespace": "",
+    "references": [],
+    "includePlatforms": [
+        "Editor",
+        "LinuxStandalone64",
+        "CloudRendering",
+        "macOSStandalone",
+        "WindowsStandalone32",
+        "WindowsStandalone64"
+    ],
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Runtime/SkyHookException.cs

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+using System;
+
+namespace SkyHook
+{
+  public class SkyHookException : Exception
+  {
+    public SkyHookException(string message) : base(message) { }
+  }
+}

Runtime/SkyHookException.cs.meta

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Runtime/SkyHookManager.cs

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+using UnityEngine;
+
+namespace SkyHook
+{
+  public class SkyHookManager : MonoBehaviour
+  {
+    private static SkyHookManager _instance;
+
+    internal static bool IsFocused;
+
+    public bool requireFocus = true;
+
+    private bool _started;
+
+    public static SkyHookManager Instance
+    {
+      get
+      {
+        if (_instance) return _instance;
+
+        var obj = new GameObject("SkyHook Manager");
+
+        _instance = obj.AddComponent<SkyHookManager>();
+
+        DontDestroyOnLoad(_instance);
+
+        return _instance;
+      }
+    }
+
+    private void HookCallback(SkyHookEvent ev)
+    {
+      Debug.Log($"{ev.Type} {ev.Key} {ev.Time}");
+    }
+
+    private void StartHook()
+    {
+      var result = SkyHookNative.StartHook(HookCallback);
+
+      if (result != null)
+      {
+        throw new SkyHookException(result);
+      }
+
+      _started = true;
+    }
+
+    private void StopHook()
+    {
+      if (!_started) return;
+
+      var result = SkyHookNative.StopHook();
+
+      if (result != null)
+      {
+        throw new SkyHookException(result);
+      }
+
+      _started = false;
+    }
+
+    public static void Start()
+    {
+      Instance.StartHook();
+    }
+
+    public static void Stop()
+    {
+      Instance.StopHook();
+    }
+
+    private void OnDestroy()
+    {
+      Debug.Log("Destroy");
+      StopHook();
+    }
+
+    private void Run()
+    {
+      if (requireFocus)
+      {
+        IsFocused = Application.isFocused;
+      }
+    }
+  }
+}

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Runtime/SkyHookNative.cs

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+using System.Runtime.InteropServices;
+
+namespace SkyHook
+{
+  internal class SkyHookNative
+  {
+    public delegate void Callback(SkyHookEvent ev);
+
+    private const string LIB = "skyhook";
+
+    [DllImport(LIB, EntryPoint = "start_hook", CallingConvention = CallingConvention.Cdecl)]
+    public static extern string StartHook(Callback callback);
+
+    [DllImport(LIB, EntryPoint = "stop_hook", CallingConvention = CallingConvention.Cdecl)]
+    public static extern string StopHook();
+  }
+}

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