chore: add logger

internal/app/app.go

@@ -0,0 +1,19 @@
+package app
+
+import (
+	"log/slog"
+)
+
+type App struct {
+	logger *slog.Logger
+}
+
+func NewApp() *App {
+	return &App{
+		logger: setupLogging(),
+	}
+}
+
+func (a *App) Logger() *slog.Logger {
+	return a.logger
+}