update m2pool 新增注销账号功能

m2pool-common/common-datasource/src/main/java/com/m2pool/common/datasource/annotation/MiningDB.java

@@ -0,0 +1,15 @@
+package com.m2pool.common.datasource.annotation;
+
+import com.baomidou.dynamic.datasource.annotation.DS;
+
+import java.lang.annotation.*;
+
+/**
+ * 矿池数据库（只读）
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@DS("mining")
+public @interface MiningDB {
+}