Added hasMultiWorldSupport to controllers

Introduced `hasMultiWorldSupport` method in `EconomyController` and `BankController`. This determines multi-world handling capabilities and clarifies parameter behavior for non-supported cases.

Author: NonSwag

src/main/java/net/thenextlvl/service/api/economy/EconomyController.java

@@ -314,4 +314,14 @@ default CompletableFuture<Boolean> deleteAccount(UUID uuid) {
      * @return a CompletableFuture that will complete when the account is deleted
      */
     CompletableFuture<Boolean> deleteAccount(UUID uuid, @Nullable World world);
+
+    /**
+     * Determines whether the controller supports handling of multiple worlds.
+     *
+     * @return {@code true} if multi-world economy is supported, otherwise {@code false}
+     * @implSpec If multiple worlds are not supported,
+     * implementations must ignore world-specific parameters and only handle cases where the world parameter is null.
+     */
+    @Contract(pure = true)
+    boolean hasMultiWorldSupport();
 }

src/main/java/net/thenextlvl/service/api/economy/bank/BankController.java

@@ -321,4 +321,14 @@ default Optional<Bank> getBank(UUID uuid) {
      * @return an Optional containing the Bank associated with the UUID and world, or empty if not found
      */
     Optional<Bank> getBank(UUID uuid, @Nullable World world);
+
+    /**
+     * Determines whether the controller supports handling of multiple worlds.
+     *
+     * @return {@code true} if multi-world banking is supported, otherwise {@code false}
+     * @implSpec If multiple worlds are not supported,
+     * implementations must ignore world-specific parameters and only handle cases where the world parameter is null.
+     */
+    @Contract(pure = true)
+    boolean hasMultiWorldSupport();
 }