Add `loadAfter` plugin setting

plugin-schema.json

@@ -9,7 +9,11 @@
             "pattern": "^[A-Za-z\\d_.-]+$"
         }
     },
-  "required": [ "name", "description", "mainClass" ],
+    "required": [
+        "name",
+        "description",
+        "mainClass"
+    ],
     "properties": {
         "name": {
             "description": "The unique name of plugin.",
@@ -22,7 +26,10 @@
         },
         "version": {
             "description": "A plugin revision identifier.",
-      "type": [ "string", "number" ]
+            "type": [
+                "string",
+                "number"
+            ]
         },
         "description": {
             "description": "Human readable plugin summary.",
@@ -44,6 +51,13 @@
             "description": "The URL to the plugin's site",
             "type": "string",
             "format": "uri"
+        },
+        "loadAfter": {
+            "description": "Plugins to load before this plugin.",
+            "type": "array",
+            "items": {
+                "type": "string"
+            }
         }
     }
 }
\ No newline at end of file

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

@@ -7,11 +7,13 @@ public final class PluginConfig {
     public String name, description, version;
     public String mainClass;
     public String[] authors;
+    public String[] loadAfter;
 
     /**
      * Attempts to validate this config instance.
      * @return True if the config is valid, false otherwise.
      */
+    @SuppressWarnings("BooleanMethodIsAlwaysInverted")
     public boolean validate() {
         return name != null && description != null && mainClass != null;
     }