Remove blog components and configurations to streamline the project

- Deleted multiple blog-related components including Grid, GridItem, Headline, List, ListItem, Pagination, RelatedPosts, SinglePost, and Tags to simplify the codebase.
- Removed associated configurations from src/config.yaml, eliminating unused blog settings.
- Cleaned up email templates and layouts related to blog functionality to enhance maintainability.
- Updated styles in tailwind.css for consistency following the removal of blog components.

src/layouts/LandingLayout.astro

@@ -1,35 +0,0 @@
----
-import PageLayout from '~/layouts/PageLayout.astro';
-import Header from '~/components/widgets/Header.astro';
-
-import { headerData } from '~/navigation';
-import type { MetaData } from '~/types';
-
-export interface Props {
-  metadata?: MetaData;
-}
-
-const { metadata } = Astro.props;
----
-
-<PageLayout metadata={metadata}>
-  <Fragment slot="announcement">
-    <slot name="announcement" />
-  </Fragment>
-  <Fragment slot="header">
-    <slot name="header">
-      <Header
-        links={headerData?.links[2] ? [headerData.links[2]] : undefined}
-        actions={[
-          {
-            text: 'Download',
-            href: 'https://github.com/onwidget/astrowind',
-          },
-        ]}
-        showToggleTheme
-        position="right"
-      />
-    </slot>
-  </Fragment>
-  <slot />
-</PageLayout>

src/layouts/MarkdownLayout.astro

@@ -1,28 +0,0 @@
----
-import Layout from '~/layouts/PageLayout.astro';
-
-import type { MetaData } from '~/types';
-
-export interface Props {
-  frontmatter: {
-    title?: string;
-  };
-}
-
-const { frontmatter } = Astro.props;
-
-const metadata: MetaData = {
-  title: frontmatter?.title,
-};
----
-
-<Layout metadata={metadata}>
-  <section class="px-4 py-16 sm:px-6 mx-auto lg:px-8 lg:py-20 max-w-4xl">
-    <h1 class="font-bold font-heading text-4xl md:text-5xl leading-tighter tracking-tighter">{frontmatter.title}</h1>
-    <div
-      class="mx-auto prose prose-lg max-w-4xl dark:prose-invert dark:prose-headings:text-slate-300 prose-md prose-headings:font-heading prose-headings:leading-tighter prose-headings:tracking-tighter prose-headings:font-bold prose-a:text-blue-600 dark:prose-a:text-blue-400 prose-img:rounded-md prose-img:shadow-lg mt-8"
-    >
-      <slot />
-    </div>
-  </section>
-</Layout>