Remove admin functionality related code

The admin functionality related code has been removed which includes various user and organization functionalities like delete, update, ban etc. This includes action logic, UI components and supportive utility functions. Notable deletions include the server action files, dialog components for actions like banning and deleting, and related utility functions. This massive cleanup is aimed at simplifying the codebase and the commit reflects adherence to project restructuring.

apps/web/app/not-found.tsx

@@ -1,12 +1,12 @@
 import Link from 'next/link';
 
-import { ArrowLeftIcon } from '@radix-ui/react-icons';
+import { ArrowLeftIcon } from 'lucide-react';
 
 import { Button } from '@kit/ui/button';
 import { Heading } from '@kit/ui/heading';
 import { Trans } from '@kit/ui/trans';
 
-import { SiteHeader } from '~/(marketing)/components/site-header';
+import { SiteHeader } from '~/(marketing)/_components/site-header';
 import appConfig from '~/config/app.config';
 import { withI18n } from '~/lib/i18n/with-i18n';
 
@@ -17,7 +17,7 @@ export const metadata = {
 const NotFoundPage = () => {
   return (
     <div className={'flex h-screen flex-1 flex-col'}>
-      <SiteHeader />
+      <SiteHeader session={null} />
 
       <div
         className={