初版功能完成

internal/platform/windows/wintunruntime/asset_windows_amd64.go

@@ -0,0 +1,22 @@
+//go:build windows && amd64
+
+package wintunruntime
+
+import (
+	"crypto/sha256"
+	_ "embed"
+	"encoding/hex"
+)
+
+//go:embed assets/amd64/wintun.dll
+var embeddedDLL []byte
+
+func assetBytes() ([]byte, [sha256.Size]byte, error) {
+	var expected [sha256.Size]byte
+	decoded, err := hex.DecodeString(DLLSHA256AMD64)
+	if err != nil {
+		return nil, expected, err
+	}
+	copy(expected[:], decoded)
+	return embeddedDLL, expected, nil
+}