refactor: update ENDSTONE_PLUGIN due to API change

Author: wu-vincent

src/example_plugin.cpp

@@ -5,36 +5,36 @@
 // The ENDSTONE_PLUGIN macro defines the metadata for the plugin.
 ENDSTONE_PLUGIN(/*name=*/"CppExamplePlugin", /*version=*/"0.4.0", /*main_class=*/ExamplePlugin)
 {
-    plugin.description = "C++ example plugin for Endstone servers";
-    plugin.website = "https://github.com/EndstoneMC/cpp-example-plugin";
-    plugin.authors = {"Endstone Developers <hello@endstone.dev>"};
+    description = "C++ example plugin for Endstone servers";
+    website = "https://github.com/EndstoneMC/cpp-example-plugin";
+    authors = {"Endstone Developers <hello@endstone.dev>"};
 
-    plugin.command("debug")
+    command("debug") //
         .description("Print debug information.")
         .usages("/debug")
         .permissions("cpp_example.command.debug");
 
-    plugin.command("fibonacci")
+    command("fibonacci")
         .description("A simple command that writes the Fibonacci series up to n.")
         .usages("/fibonacci <n: int>")
         .aliases("fib")
         .permissions("cpp_example.command.fibonacci", "cpp_example.command.fibonacci.large_n");
 
-    plugin.permission("cpp_example.command")
+    permission("cpp_example.command")
         .description("Allow users to use all commands provided by this example plugin")
         .children("cpp_example.command.debug", true)
         .children("cpp_example.command.fibonacci", true);
 
-    plugin.permission("cpp_example.command.debug")
+    permission("cpp_example.command.debug")
         .description("Allow users to use the debug command")
         .default_(endstone::PermissionDefault::Operator);
 
-    plugin.permission("cpp_example.command.fibonacci")
+    permission("cpp_example.command.fibonacci")
         .description("Allow users to use the fibonacci command")
         .default_(endstone::PermissionDefault::True)
         .children("cpp_example.command.fibonacci.large_n", true);
 
-    plugin.permission("cpp_example.command.fibonacci.large_n")
+    permission("cpp_example.command.fibonacci.large_n")
         .description("Allow users to use the fibonacci command with n >= 1000")
         .default_(endstone::PermissionDefault::Operator);
 }