Add logging to storage package

server/internal/storage/filesystem.go

@@ -2,6 +2,7 @@ package storage
 
 import (
 	"io/fs"
+	"novamd/internal/logging"
 	"os"
 )
 
@@ -17,6 +18,15 @@ type fileSystem interface {
 	IsNotExist(err error) bool
 }
 
+var logger logging.Logger
+
+func getLogger() logging.Logger {
+	if logger == nil {
+		logger = logging.WithGroup("storage")
+	}
+	return logger
+}
+
 // osFS implements the FileSystem interface using the real filesystem.
 type osFS struct{}