feat: Create a graphical tree and PS flow view of AppSets (#8558, #9202)#217

keithchong merged 3 commits intoredhat-developer:mainredhat-developer/gitops-console-plugin:mainfrom

keithchong:8558-9202-AppSetGraphViewkeithchong/gitops-plugin:8558-9202-AppSetGraphViewCopy head branch name to clipboard