refactor: update schema handling and improve SEO metadata

- Changed schema type from WithContext<Thing> to Thing[] in Head, BaseLayout, and JsonLd components for better flexibility.
- Added optional robots meta tag to Head component.
- Updated JSON-LD generation in JsonLd component to include a structured payload.
- Enhanced page and blog schemas to support breadcrumb and person schemas for improved SEO.
- Introduced new utility schemas for website and person to streamline schema generation.
- Refactored existing schemas to align with the new structure and ensure consistency across components.

src/utils/schemas/websiteSchema.ts

@@ -0,0 +1,23 @@
+import type { WebSite } from "schema-dts";
+import { config } from "../../config";
+import { personId, websiteId } from "./ids";
+
+export type WebsiteSchemaParams = {
+	readonly description: string;
+	readonly lang: string;
+	readonly name: string;
+	readonly siteUrl: string;
+};
+
+export default ({ siteUrl, name, description, lang }: WebsiteSchemaParams): WebSite => ({
+	"@type": "WebSite",
+	"@id": websiteId(siteUrl),
+	"url": siteUrl,
+	"name": name,
+	"description": description,
+	"inLanguage": lang,
+	"publisher": { "@id": personId(siteUrl) },
+	"author": { "@id": personId(siteUrl) },
+	"copyrightHolder": { "@id": personId(siteUrl) },
+	"sameAs": config.author.sameAs,
+});