Add info about reconstructing replays via model

nise-backend/src/main/kotlin/com/nisemoe/nise/Models.kt

@@ -204,6 +204,31 @@ data class ReplayData(
 
 }
 
+// Contains everything needed to reconstruct a replay (.osr) file.
+// We currently do not store some of these - these have been marked.
+data class EncodedReplayData(
+    val gameMode: Byte,
+    val gameVersion: Int,
+    val beatmapHash: String,
+    val username: String,
+    val replayHash: String, // We do not store - maybe we can reconstruct?
+    val count300: Short,
+    val count100: Short,
+    val count50: Short,
+    val countGeki: Short, // We do not store - probably should
+    val countKatu: Short, // We do not store - probably should
+    val countMisses: Short,
+    val totalScore: Int,
+    val greatestCombo: Short,
+    val perfect: Byte,
+    val mods: Int,
+    val lifeBar: String, // We do not store, and maybe shouldn't?
+    val timeStamp: Long,
+    val replayLength: ByteArray, // We do not store - could be calculated?
+    val scoreId: Long,
+    val additionalInformation: Double, // We do not store - probably not needed
+)
+
 data class DistributionEntry(
     val countMiss: Double,
     val count300: Double,