chore: ignore the entire .idea folder

Author: sasuked

.gitignore

@@ -5,10 +5,7 @@ build/
 !**/src/test/**/build/
 
 ### IntelliJ IDEA ###
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
+.idea/
 *.iws
 *.iml
 *.ipr
@@ -39,4 +36,6 @@ bin/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store
+/.idea/
+/.idea/