feat: remove epf

pom.xml

src/main/java/com/example/loadfile/AddFileToUserRequest.java

src/main/java/com/example/loadfile/App.java

src/main/java/com/example/loadfile/Image.java

src/main/java/com/example/loadfile/ImageDao.java

src/main/java/com/example/loadfile/User.java

src/main/java/com/example/loadfile/UserDao.java

...main/java/com/example/loadfile/UserLibraryController.java

src/main/java/com/example/loadfile/UserMapper.java

...xample/loadfile/LiveCodingJavaSpringApplicationTests.java