Enable KeyStatic CMS for production

Changes:
- Added Netlify adapter for server-side rendering
- Changed output mode from static to server
- Updated KeyStatic storage from local to GitHub
- Removed SKIP_KEYSTATIC from Netlify build
- KeyStatic Admin UI will be available at /keystatic

Features:
- Server-side rendering with Netlify Functions
- GitHub integration for content management
- Production-ready KeyStatic Admin UI

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

.netlify/build/pages/keystatic/_---params_.astro.mjs

@@ -0,0 +1,23 @@
+import { c as createComponent, r as renderComponent, a as renderTemplate } from '../../chunks/astro/server_BfDhyAjM.mjs';
+import 'kleur/colors';
+export { renderers } from '../../renderers.mjs';
+
+const prerender = false;
+const $$KeystaticAstroPage = createComponent(($$result, $$props, $$slots) => {
+  return renderTemplate`${renderComponent($$result, "Keystatic", null, { "client:only": "react", "client:component-hydration": "only", "client:component-path": "/Users/bugracanata/Developer/[Telsiz]/ARC-Web-Sitesi/node_modules/@keystatic/astro/internal/keystatic-page.js", "client:component-export": "Keystatic" })}`;
+}, "/Users/bugracanata/Developer/[Telsiz]/ARC-Web-Sitesi/node_modules/@keystatic/astro/internal/keystatic-astro-page.astro", void 0);
+
+const $$file = "/Users/bugracanata/Developer/[Telsiz]/ARC-Web-Sitesi/node_modules/@keystatic/astro/internal/keystatic-astro-page.astro";
+const $$url = undefined;
+
+const _page = /*#__PURE__*/Object.freeze(/*#__PURE__*/Object.defineProperty({
+	__proto__: null,
+	default: $$KeystaticAstroPage,
+	file: $$file,
+	prerender,
+	url: $$url
+}, Symbol.toStringTag, { value: 'Module' }));
+
+const page = () => _page;
+
+export { page };