Introduce a new arguments parser (#1629)

Original commits:

* Clean-up

* Introduce a new application arguments parser & handler

* Clean-up and deprecate `Tools#getLanguageOption`

* Fix `-debug` and `-debugall` parameters

* found this while debugging, ...why

* Remove deprecated parameters

* Invoke startup argument parser before handbook generation

* Move command map instantiation to `Grasscutter `(prevent making 3 instances on startup)

* Ensure \n at EOF

Co-authored-by: AnimeGitB <AnimeGitB@bigblueball.in>

src/main/java/emu/grasscutter/plugin/PluginManager.java

@@ -85,7 +85,6 @@ public final class PluginManager {
                     PluginConfig pluginConfig = Grasscutter.getGsonFactory().fromJson(fileReader, PluginConfig.class);
                     // Check if the plugin config is valid.
                     if (!pluginConfig.validate()) {
-                        Utils.logObject(pluginConfig);
                         Grasscutter.getLogger().warn("Plugin " + plugin.getName() + " has an invalid config file.");
                         return;
                     }
@@ -211,11 +210,7 @@ public final class PluginManager {
     public void disablePlugins() {
         this.plugins.forEach((name, plugin) -> {
             Grasscutter.getLogger().info("Disabling plugin: " + name);
-            try {
-                plugin.onDisable();
-            } catch (Throwable exception) {
-                Grasscutter.getLogger().error("Failed to disable plugin: " + name, exception);
-            }
+            this.disablePlugin(plugin);
         });
     }