feat: Add SvelteKit starter template for customer sites

- Complete SvelteKit 2 + Svelte 5 template
- Tailwind CSS styling with primary color customization
- Pages: Home, About, Services, Contact
- Contact form with D1 database backend
- Placeholder system for site-specific values
- Cloudflare adapter configuration

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tsconfig.json

@@ -0,0 +1,14 @@
+{
+	"extends": "./.svelte-kit/tsconfig.json",
+	"compilerOptions": {
+		"allowJs": true,
+		"checkJs": true,
+		"esModuleInterop": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true,
+		"moduleResolution": "bundler"
+	}
+}