[PlaybackController] Removed playback session, added playback metadata

src/main/java/com/minecrafttas/tasmod/playback/PlaybackMetadata.java

@@ -0,0 +1,20 @@
+package com.minecrafttas.tasmod.playback;
+
+import java.util.LinkedHashMap;
+import java.util.Properties;
+
+/**
+ * Stores all tasfile specific metadata like author, rerecords and name.<br>
+ * <br>
+ * Each metadata is grouped by a group name.<br>
+ * Made to be easily modifiable so that you can add your own metadata.
+ */
+public class PlaybackMetadata {
+	LinkedHashMap<String, Properties> metadata;
+
+	public PlaybackMetadata() {
+		this.metadata = new LinkedHashMap<>();
+	}
+
+
+}