prepared benchmarking for tooling integration

tool/DotRecast.Tool.Benchmark/Program.cs

@@ -0,0 +1,31 @@
+using System;
+using BenchmarkDotNet.Running;
+using DotRecast.Tool.Benchmark.Benchmarks;
+
+namespace DotRecast.Tool.Benchmark;
+
+public static class Program
+{
+    public static int Main(string[] args)
+    {
+        Type[] benchmarkTypes =
+        [
+            typeof(VectorBenchmarks),
+            typeof(PriorityQueueBenchmarks),
+            typeof(ArrayBenchmarks)
+        ];
+
+        var switcher = new BenchmarkSwitcher(benchmarkTypes);
+
+        if (args == null || args.Length == 0)
+        {
+            switcher.RunAll();
+        }
+        else
+        {
+            switcher.Run(args);
+        }
+
+        return 0;
+    }
+}