Add logo for Dolphinscheduler (#408)

diff --git a/src/views/components/topology/assets/DOLPHINSCHEDULER.png b/src/views/components/topology/assets/DOLPHINSCHEDULER.png
new file mode 100644
index 0000000..8db9603
--- /dev/null
+++ b/src/views/components/topology/assets/DOLPHINSCHEDULER.png
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