Log env file load errors

cmd/server/main.go

@@ -3,12 +3,15 @@ package main
 
 import (
 	"mal/internal/app"
+	"mal/internal/observability"
 
 	"github.com/joho/godotenv"
 )
 
 func main() {
-	_ = godotenv.Load()
+	if err := godotenv.Load(); err != nil {
+		observability.Warn("env_file_load_failed", "server", "", nil, err)
+	}
 
 	application := app.NewApp()
 	application.Run()