restructure application, add get endpoint

internal/application/application.go

@@ -0,0 +1,22 @@
+package application
+
+import (
+	"vegan-barcode/internal/database"
+	"vegan-barcode/internal/utils"
+
+	"github.com/sirupsen/logrus"
+)
+
+type Application struct {
+	db  database.Database
+	log *logrus.Logger
+}
+
+func Start() {
+	application := Application{
+		db:  database.InitializeDatabase(),
+		log: utils.InitializeLogger(),
+	}
+
+	application.bindRoutes()
+}