Add custom page templates for Home, Contact, and Services

- Created a new Contact Page template with a contact form and information section.
- Developed a Home Page template featuring a hero section, core capabilities, and pricing details.
- Introduced a Services Page template outlining core services and industry solutions.
- Added a default page template for standard pages without a custom template.
- Implemented a single post template for displaying individual blog posts.
- Created a style.css file for theme metadata and styling.

wp-content/themes/ots-signs/single.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Single post template.
+ */
+get_header();
+?>
+
+<div class="page-header-light"></div>
+
+<section class="page-hero">
+    <div class="container">
+        <h1><?php the_title(); ?></h1>
+        <p class="lead" style="color:rgba(255,255,255,.6);"><?php echo get_the_date(); ?></p>
+    </div>
+</section>
+
+<section class="section">
+    <div class="container" style="max-width:800px;">
+        <article>
+            <div class="entry-content" style="line-height:1.8;color:var(--color-text-muted);">
+                <?php
+                if ( have_posts() ) :
+                    while ( have_posts() ) :
+                        the_post();
+                        the_content();
+                    endwhile;
+                endif;
+                ?>
+            </div>
+        </article>
+        <div style="margin-top:3rem;">
+            <a href="<?php echo esc_url( home_url( '/' ) ); ?>" class="btn btn-outline">&larr; Back to Home</a>
+        </div>
+    </div>
+</section>
+
+<?php get_footer(); ?>