chore: simplify dot-idea gitignore (#68)

Reviewed-on: https://gitea.angry.im/PeterCxy/OpenEUICC/pulls/68
Co-authored-by: septs <github@septs.pw>
Co-committed-by: septs <github@septs.pw>

.gitignore

@@ -2,13 +2,6 @@
 .gradle
 /local.properties
 /keystore.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
-/.idea/deploymentTargetDropDown.xml
 .DS_Store
 /build
 /captures

.idea/.gitignore

@@ -1,3 +1,10 @@
 # Default ignored files
-/shelf/
+/shelf
+/caches
+/libraries
+/modules.xml
 /workspace.xml
+/navEditor.xml
+/assetWizardSettings.xml
+/deploymentTargetDropDown.xml
+/runConfigurations.xml