Feat: Sync Navbar Section Dropdown

Added section context that can be set when section heading
scrolls into browser viewport and it's value can be used
to set the current value of the navbar dropdown.

Added kebab case utility method for converting title to element
id.

src/app/components/SideBar.tsx

@@ -2,8 +2,9 @@
 
 import Link from 'next/link.js';
 import { useState } from 'react';
-import { useThemeContext } from '../theme';
-import { Doc, DocsStructure } from '../types/types.js';
+import { useThemeContext } from '../context/theme';
+import { Doc, DocsStructure } from '../types/types';
+import { toKebabCase } from '../utils/stringUtils';
 import styles from './SideBar.module.css';
 
 function TreeNode({ doc }: { doc: Doc }) {
@@ -19,9 +20,7 @@ function TreeNode({ doc }: { doc: Doc }) {
         <div className={styles.expandable}>
           {doc.copy ? (
             <a
-              href={`#${doc.title
-                .replaceAll(' ', '-')
-                .toLowerCase()}`}
+              href={`#${toKebabCase(doc.title)}`}
               className={styles.link}
             >
               {doc.title}
@@ -66,9 +65,7 @@ function TreeNode({ doc }: { doc: Doc }) {
         </div>
       ) : doc.copy ? (
         <a
-          href={`#${doc.title
-            .replaceAll(' ', '-')
-            .toLowerCase()}`}
+          href={`#${toKebabCase(doc.title)}`}
           className={styles.link}
         >
           {doc.title}