feat: scaffold fx app and gin server

internal/app/app.go

@@ -0,0 +1,19 @@
+package app
+
+import (
+	"mal/internal/database"
+	"mal/internal/server"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/fx"
+)
+
+func NewApp() *fx.App {
+	return fx.New(
+		database.Module,
+		server.Module,
+		fx.Invoke(func(r *gin.Engine, registers []server.RouteRegister) {
+			server.RegisterRoutes(r, registers)
+		}),
+	)
+}