Renamed DurationArgument to DurationArgumentType

Aligned class name with naming conventions for clarity and consistency. Updated relevant references and documentation.

Author: NonSwag

paper/src/main/java/core/paper/command/argument/DurationArgument.java renamed to paper/src/main/java/core/paper/command/argument/DurationArgumentType.java

@@ -13,32 +13,32 @@
  * A custom argument type implementation to handle durations in a converted format.
  */
 @NullMarked
-public final class DurationArgument implements CustomArgumentType.Converted<Duration, Integer> {
+public final class DurationArgumentType implements CustomArgumentType.Converted<Duration, Integer> {
     private final Duration minimum;
 
-    private DurationArgument(Duration minimum) {
+    private DurationArgumentType(Duration minimum) {
         this.minimum = minimum;
     }
 
     /**
-     * Creates a {@link DurationArgument} instance with a default minimum duration of zero.
+     * Creates a {@link DurationArgumentType} instance with a default minimum duration of zero.
      *
-     * @return a new {@link DurationArgument} instance with a minimum duration of zero
+     * @return a new {@link DurationArgumentType} instance with a minimum duration of zero
      */
     @Contract(value = " -> new", pure = true)
-    public static DurationArgument duration() {
+    public static DurationArgumentType duration() {
         return duration(Duration.ZERO);
     }
 
     /**
-     * Creates a new {@link DurationArgument} instance with the specified minimum duration.
+     * Creates a new {@link DurationArgumentType} instance with the specified minimum duration.
      *
      * @param minimum the minimum duration for the argument
-     * @return a new {@link DurationArgument} instance with the specified minimum duration
+     * @return a new {@link DurationArgumentType} instance with the specified minimum duration
      */
     @Contract(value = "_ -> new", pure = true)
-    public static DurationArgument duration(Duration minimum) {
-        return new DurationArgument(minimum);
+    public static DurationArgumentType duration(Duration minimum) {
+        return new DurationArgumentType(minimum);
     }
 
     @Override