refactor(misc): enhance performance on bytes pool, entrypoint, access log and route context handling

- Introduced benchmark tests for Entrypoint and ReverseProxy to evaluate performance.
- Updated Entrypoint's ServeHTTP method to improve route context management.
- Added new test file for entrypoint benchmarks and refined existing tests for route handling.

internal/net/gphttp/reverseproxy/reverse_proxy_benchmark_test.go

@@ -0,0 +1,49 @@
+package reverseproxy
+
+import (
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+
+	nettypes "github.com/yusing/go-proxy/internal/net/types"
+)
+
+type noopTransport struct{}
+
+func (t noopTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	return &http.Response{
+		StatusCode:    http.StatusOK,
+		Body:          io.NopCloser(strings.NewReader("Hello, world!")),
+		Request:       req,
+		ContentLength: int64(len("Hello, world!")),
+		Header:        http.Header{},
+	}, nil
+}
+
+type noopResponseWriter struct{}
+
+func (w noopResponseWriter) Header() http.Header {
+	return http.Header{}
+}
+
+func (w noopResponseWriter) Write(b []byte) (int, error) {
+	return len(b), nil
+}
+
+func (w noopResponseWriter) WriteHeader(statusCode int) {
+}
+
+func BenchmarkReverseProxy(b *testing.B) {
+	var w noopResponseWriter
+	var req = http.Request{
+		Method: "GET",
+		URL:    &url.URL{Scheme: "http", Host: "test"},
+		Body:   io.NopCloser(strings.NewReader("Hello, world!")),
+	}
+	proxy := NewReverseProxy("test", nettypes.MustParseURL("http://localhost:8080"), noopTransport{})
+	for b.Loop() {
+		proxy.ServeHTTP(w, &req)
+	}
+}