Merge remote-tracking branch 'origin/ht-dev' into ht-dev

rain

2024-04-08 c1915a7e947710572826a746e975e8d09516a0e7

 src/main/java/com/dji/sample/component/mqtt/model/TopicConst.java

@@ -34,4 +34,9 @@

    public static final String REGEX_SN = "[A-Za-z0-9]+";

    public static final String DRC = "/drc";

    public static final String UP = "/up";

    public static final String DOWN = "/down";
}