chore(stacktrace): Add parseSymbol benchmark (#4169)

Signed-off-by: Kemal Akkoyun <[email protected]>

Author: kakkoyun

internal/stacktrace/parse_symbol_bench_test.go

@@ -0,0 +1,26 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2016 Datadog, Inc.
+
+package stacktrace
+
+import "testing"
+
+func BenchmarkParseSymbol(b *testing.B) {
+	testCases := []string{
+		"github.com/DataDog/dd-trace-go/v2/internal/stacktrace.TestFunc",
+		"github.com/DataDog/dd-trace-go/v2/internal/stacktrace.(*Event).NewException",
+		"github.com/DataDog/dd-trace-go/v2/internal/stacktrace.TestFunc.func1",
+		"os/exec.(*Cmd).Run.func1",
+		"test.(*Test).Method",
+		"test.main",
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		for _, tc := range testCases {
+			_ = parseSymbol(tc)
+		}
+	}
+}