v0.3.0 Release

What's Changed

• create repository issue fixed by @dmsej108 in #80
• fix iframe issue by @hyun357123 in #81
• update k8s piepeline by @hyun357123 in #82
• UI update by @Strato-YangSungHun in #83
• UI update (debugging) by @Strato-YangSungHun in #84
• UI update (debugging) by @Strato-YangSungHun in #85
• UI build file update by @Strato-YangSungHun in #86
• update mini, max spec for application install by @hyun357123 in #87
• tumblebug url 수정 by @hyun357123 in #88

Full Changelog: v0.2.0...v0.3.0