Adding deeplearning4j-ui for visualization of training in module my-first-dl4j-project

[codenamewei]

Module my-first-dl4j-project missing dependency in pom.xml to support visualization of training on port 9000 https://deeplearning4j.konduit.ai/tuning-and-training/visualization

Solve this issue by adding the dependency and test whether model training can be visualized when running MyFirstDL4JProject.java