Feat: add secondary constructor P2PMediaLoader for Java compatibility

p2pml/src/main/java/com/novage/p2pml/P2PMediaLoader.kt

@@ -37,14 +37,29 @@ import kotlinx.coroutines.runBlocking
  * Default: null (uses built-in implementation)
  */
 @UnstableApi
-class P2PMediaLoader constructor(
+class P2PMediaLoader(
     private val readyCallback: P2PReadyCallback,
     private val errorCallback: OnErrorCallback,
     private val coreConfigJson: String = "",
     private val serverPort: Int = Constants.DEFAULT_SERVER_PORT,
     private val customJavaScriptInterfaces: List<Pair<String, Any>> = emptyList(),
     private val customEngineImplementationPath: String? = null,
 ) {
+    // Secondary constructor for Java compatibility
+    constructor(
+        readyCallback: P2PReadyCallback,
+        errorCallback: OnErrorCallback,
+        serverPort: Int,
+        coreConfigJson: String,
+    ) : this(
+        readyCallback,
+        errorCallback,
+        coreConfigJson,
+        serverPort,
+        emptyList(),
+        null
+    )
+
     private val engineStateManager = P2PStateManager()
     private val playbackCalculator = ExoPlayerPlaybackCalculator()
     private val manifestParser = HlsManifestParser(playbackCalculator, serverPort)