Improve player name suggestions filtering

Added filters to suggest player names that contain the remaining input in command suggestions. This ensures more relevant and accurate suggestions for both online and offline players.

Author: david

paper/src/main/java/core/paper/command/CoreArgumentTypes.java

@@ -23,6 +23,7 @@ class CoreArgumentTypes {
         Arrays.stream(Bukkit.getOfflinePlayers())
                 .map(OfflinePlayer::getName)
                 .filter(Objects::nonNull)
+                .filter(s -> s.contains(builder.getRemaining()))
                 .forEach(builder::suggest);
         return builder.buildFuture();
     });
@@ -35,6 +36,7 @@ class CoreArgumentTypes {
             }, (context, builder) -> {
         Bukkit.getOnlinePlayers().stream()
                 .map(Player::getName)
+                .filter(s -> s.contains(builder.getRemaining()))
                 .forEach(builder::suggest);
         return builder.buildFuture();
     });
@@ -47,6 +49,7 @@ class CoreArgumentTypes {
             }, (context, builder) -> {
         Bukkit.getOnlinePlayers().stream()
                 .map(Player::getName)
+                .filter(s -> s.contains(builder.getRemaining()))
                 .forEach(builder::suggest);
         return builder.buildFuture();
     });