创建 @FXThread 注解 (#3374)

HMCLCore/src/main/java/org/jackhuang/hmcl/util/FXThread.java

@@ -0,0 +1,32 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2024 huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.util;
+
+import java.lang.annotation.*;
+
+/**
+ * Mark a method that can only be called on the JavaFX Application Thread,
+ * or mark a field that can only be read/modified on the JavaFX Application Thread.
+ *
+ * @author Glavo
+ */
+@Documented
+@Target({ElementType.METHOD, ElementType.FIELD})
+@Retention(RetentionPolicy.SOURCE)
+public @interface FXThread {
+}