[플러터] git 설정이 꼬였을 때, 완전 초기화!

[상황1] 용량이 커서 못올릴 때

# Flutter/Dart
.dart_tool/
.packages
build/
.pub-cache/

# iOS/Xcode
ios/DerivedData*/
ios/**/Build*/
ios/**/BuildProductsPath/
ios/**/Index.noindex/
**/*.dSYM/
**/*.xcindex/
*.mdb

# Flutter iOS
ios/Flutter/
ios/.symlinks/
ios/Pods/

# Android build
android/**/build/

git 이력 완전 초기화

rm -rf .git