Add DeprecatedSinceMirai.internalSince

mirai-core-utils/src/commonMain/kotlin/Annotations.kt

@@ -1,10 +1,10 @@
 /*
- * Copyright 2019-2021 Mamoe Technologies and contributors.
+ * Copyright 2019-2022 Mamoe Technologies and contributors.
  *
- *  此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
- *  Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
  *
- *  https://github.com/mamoe/mirai/blob/master/LICENSE
+ * https://github.com/mamoe/mirai/blob/dev/LICENSE
  */
 
 package net.mamoe.mirai.utils
@@ -37,5 +37,6 @@ public annotation class TestOnly
 public annotation class DeprecatedSinceMirai(
     val warningSince: String = "",
     val errorSince: String = "",
-    val hiddenSince: String = ""
+    val hiddenSince: String = "",
+    val internalSince: String = "",
 )