Added auto-accept, player heads beside party.

src/main/java/dev/massuus/vaultpartyui/client/screen/OnlineRow.java

@@ -0,0 +1,11 @@
+package dev.massuus.vaultpartyui.client.screen;
+
+final class OnlineRow {
+    final OnlinePlayer player;
+    final RowState state;
+
+    OnlineRow(OnlinePlayer player, RowState state) {
+        this.player = player;
+        this.state = state;
+    }
+}