fix: RAM music should loop as they should now

src/net/torvald/terrarum/audio/AudioBank.kt

@@ -0,0 +1,32 @@
+package net.torvald.terrarum.audio
+
+import com.badlogic.gdx.utils.Disposable
+import java.io.File
+
+/**
+ * Created by minjaesong on 2024-04-05.
+ */
+abstract class AudioBank : Disposable {
+
+    companion object {
+        fun fromMusic(name: String, file: File, looping: Boolean = false, toRAM: Boolean = false, songFinishedHook: (AudioBank) -> Unit = {}): AudioBank {
+            return MusicContainer(name, file, looping, toRAM, songFinishedHook)
+        }
+    }
+
+    protected val hash = System.nanoTime()
+
+    abstract fun makeCopy(): AudioBank
+
+    abstract val name: String
+
+    abstract val samplingRate: Int
+    abstract val channels: Int
+    abstract val totalSizeInSamples: Long
+    abstract fun currentPositionInSamples(): Long
+
+    abstract fun readBytes(buffer: ByteArray): Int
+    abstract fun reset()
+
+    abstract val songFinishedHook: (AudioBank) -> Unit
+}