refactor: update name references and use SITE_NAME constant

- Replace full name with shorter version in README and about pages
- Use SITE_NAME constant in Header component for consistent site naming

Author: gadingnst

README.md

@@ -48,4 +48,4 @@ This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next
 
 * * *
 
-Copyright © 2022 by Sutan Gading Fadhillah Nasution
+Copyright © 2022 by Gading Nasution

src/contents/about/en.md

@@ -49,5 +49,5 @@ I care a lot about performance and SEO, so I’m showcasing a live website perfo
 ---
 
 <div className="text-center italic">
-  Best regards, **Sutan Gading Fadhillah Nasution**.
+  Best regards, **Gading Nasution**.
 </div>

src/contents/about/id.md

@@ -49,5 +49,5 @@ Saya lumayan peduli sama *performance* dan *SEO*, jadi saya tampilkan laporan pe
 ---
 
 <div className="text-center italic">
-  Salam hangat, **Sutan Gading Fadhillah Nasution**.
+  Salam hangat, **Gading Nasution**.
 </div>

src/packages/components/layouts/Header/Header.tsx

@@ -1,5 +1,6 @@
 'use client';
 
+import { SITE_NAME } from '@/configs/sites';
 import cn from '@/designs/utils/cn';
 import NextLink from '@/packages/components/base/Navigations/NextLink';
 
@@ -27,7 +28,7 @@ export default function Header() {
               'transition-all duration-300 hover:bg-white/80 hover:text-black hover:scale-105'
             ])}
           >
-            Gading's Hideout
+            {SITE_NAME}
           </NextLink>
         </div>