chore: add raii, tables code from OtterGui into new Dalamud.Interface assembly

Dalamud.Interface/Raii/Id.cs

@@ -0,0 +1,66 @@
+using ImGuiNET;
+
+namespace Dalamud.Interface.Raii;
+
+// Push an arbitrary amount of ids into an object that are all popped when it is disposed.
+// If condition is false, no id is pushed.
+public static partial class ImRaii
+{
+    public static Id PushId(string id, bool enabled = true)
+        => enabled ? new Id().Push(id) : new Id();
+
+    public static Id PushId(int id, bool enabled = true)
+        => enabled ? new Id().Push(id) : new Id();
+
+    public static Id PushId(IntPtr id, bool enabled = true)
+        => enabled ? new Id().Push(id) : new Id();
+
+    public sealed class Id : IDisposable
+    {
+        private int _count;
+
+        public Id Push(string id, bool condition = true)
+        {
+            if (condition)
+            {
+                ImGui.PushID(id);
+                ++this._count;
+            }
+
+            return this;
+        }
+
+        public Id Push(int id, bool condition = true)
+        {
+            if (condition)
+            {
+                ImGui.PushID(id);
+                ++this._count;
+            }
+
+            return this;
+        }
+
+        public Id Push(IntPtr id, bool condition = true)
+        {
+            if (condition)
+            {
+                ImGui.PushID(id);
+                ++this._count;
+            }
+
+            return this;
+        }
+
+        public void Pop(int num = 1)
+        {
+            num    =  Math.Min(num, this._count);
+            this._count -= num;
+            while (num-- > 0)
+                ImGui.PopID();
+        }
+
+        public void Dispose()
+            => this.Pop(this._count);
+    }
+}