Chore : CodeStyle ignore 추가

Author: oxix97

.gitignore

@@ -20,6 +20,11 @@
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 
+# Code Style
+.idea/**/codeStyles
+.idea/**/codeStyleConfig.xml
+.idea/**/Project.xml
+
 # User-specific stuff
 .idea/**/workspace.xml
 .idea/**/tasks.xml