[windows] Handle naked go build

v2/internal/appng/app_default.go

@@ -0,0 +1,29 @@
+//go:build !dev && !production && windows
+
+package appng
+
+import (
+	"github.com/leaanthony/winc/w32"
+	"github.com/wailsapp/wails/v2/pkg/options"
+	"os/exec"
+)
+
+// App defines a Wails application structure
+type App struct{}
+
+func (a *App) Run() error {
+	return nil
+}
+
+// CreateApp creates the app!
+func CreateApp(_ *options.App) (*App, error) {
+	result := w32.MessageBox(0,
+		`Wails applications will not build without the correct build tags. 
+Please use "wails build" or press "OK" to open the documentation on how to use "go build"`,
+		"Error",
+		w32.MB_ICONERROR|w32.MB_OKCANCEL)
+	if result == 1 {
+		exec.Command("rundll32", "url.dll,FileProtocolHandler", "https://wails.io").Start()
+	}
+	return nil, nil
+}