add maintainer

Signed-off-by: scepter914 <scepter914@gmail.com>

Author: scepter914

common/autoware_auto_perception_rviz_plugin/package.xml

@@ -8,6 +8,7 @@
   <maintainer email="satoshi.tanaka@tier4.jp">Satoshi Tanaka</maintainer>
   <maintainer email="taiki.tanaka@tier4.jp">Taiki Tanaka</maintainer>
   <maintainer email="takeshi.miura@tier4.jp">Takeshi Miura</maintainer>
+  <maintainer email="shunsuke.miura@tier4.jp">Shunsuke Miura</maintainer>
   <maintainer email="yoshi.ri@tier4.jp">Yoshi Ri</maintainer>
   <license>Apache 2.0</license>