feat: bootstrap design kit and vaporwave demo baseline

kit/scaffolds/go-nethttp-web/internal/web/templates.go.tmpl

@@ -0,0 +1,27 @@
+package web
+
+import (
+	"fmt"
+	"html/template"
+	"net/http"
+
+	appweb "{{ .module_path }}/web"
+)
+
+func parseTemplates() (*template.Template, error) {
+	t, err := template.ParseFS(appweb.Assets, "templates/*.html")
+	if err != nil {
+		return nil, fmt.Errorf("parse templates: %w", err)
+	}
+	return t, nil
+}
+
+func (s *Server) render(w http.ResponseWriter, name string, data any) error {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	if err := s.tmpl.ExecuteTemplate(w, name, data); err != nil {
+		http.Error(w, "template error", http.StatusInternalServerError)
+		return fmt.Errorf("render %s: %w", name, err)
+	}
+	return nil
+}
+