Fixed function aliases registration to the DSL

Author: jamailun

api/src/main/java/fr/jamailun/ultimatespellsystem/api/providers/JavaFunctionProvider.java

@@ -30,7 +30,7 @@ public void registerFunction(@NotNull RunnableJavaFunction newFunction, String @
     @Override
     protected void postRegister(@NotNull String key, @NotNull RunnableJavaFunction function) {
         // Also register to the DSL.
-        FunctionDefinitionsRegistry.register(function.getDslDefinition());
+        FunctionDefinitionsRegistry.register(key, function.getDslDefinition());
     }
 
 }

dsl/src/main/java/fr/jamailun/ultimatespellsystem/dsl/registries/FunctionDefinitionsRegistry.java

@@ -23,6 +23,15 @@ public static void register(@NotNull FunctionDefinition functionDefinition) {
         REGISTRY.put(functionDefinition.id(), functionDefinition);
     }
 
+    /**
+     * Register a new function definition, with a specific ID.
+     * @param key key to register.
+     * @param functionDefinition the non-null function definition to register
+     */
+    public static void register(@NotNull String key, @NotNull FunctionDefinition functionDefinition) {
+        REGISTRY.put(key, functionDefinition);
+    }
+
     /**
      * Test if a function exist.
      * @param functionId the function ID to test.