fix: rename 'placeholder' to 'scaffold'

Author: beeman

package.json

@@ -45,7 +45,7 @@
   },
   "create-solana-dapp": {
     "rename": {
-      "placeholder": {
+      "scaffold": {
         "to": "{{name}}",
         "paths": ["src"]
       }

src/app/layout.tsx

@@ -5,7 +5,7 @@ import {UiLayout} from '@/components/ui/ui-layout'
 import {ReactQueryProvider} from './react-query-provider'
 
 export const metadata = {
-  title: 'Placeholder',
+  title: 'Scaffold',
   description: 'Generated by create-solana-dapp',
 }
 

src/components/ui/ui-layout.tsx

@@ -18,7 +18,7 @@ export function UiLayout({ children, links }: { children: ReactNode; links: { la
       <div className="navbar bg-base-300 dark:text-neutral-content flex-col md:flex-row space-y-2 md:space-y-0">
         <div className="flex-1">
           <Link className="btn btn-ghost normal-case text-xl" href="/">
-            Placeholder
+            Scaffold
           </Link>
           <ul className="menu menu-horizontal px-1 space-x-2">
             {links.map(({ label, path }) => (