refactor(modules): extract castopod parts into a modules/ folder for a scalable HMVC structure

- create Admin, Analytics, Auth, Fediverse and Install modules in the root modules/ folder
- rename
ActivityPub to Fediverse

modules/Install/Views/create_superadmin.php

@@ -0,0 +1,52 @@
+<?= $this->extend('Modules\Install\Views\_layout') ?>
+
+<?= $this->section('content') ?>
+
+<?= form_open(route_to('create-superadmin'), [
+    'class' => 'flex flex-col max-w-sm w-full',
+]) ?>
+<?= csrf_field() ?>
+
+<h1 class="mb-4 text-xl font-bold font-display"><span class="inline-flex items-center justify-center w-12 h-12 mr-2 text-sm font-semibold tracking-wider border-4 rounded-full text-pine-700 border-pine-700 font-body">4/4</span><?= lang(
+    'Install.form.create_superadmin',
+) ?></h1>
+
+<?= form_label(lang('Install.form.email'), 'email') ?>
+<?= form_input([
+    'id' => 'email',
+    'name' => 'email',
+    'class' => 'form-input mb-4',
+    'type' => 'email',
+    'required' => 'required',
+    'value' => old('email'),
+]) ?>
+
+<?= form_label(lang('Install.form.username'), 'username') ?>
+<?= form_input([
+    'id' => 'username',
+    'name' => 'username',
+    'class' => 'form-input mb-4',
+    'required' => 'required',
+    'value' => old('username'),
+]) ?>
+
+<?= form_label(lang('Install.form.password'), 'password') ?>
+<?= form_input([
+    'id' => 'password',
+    'name' => 'password',
+    'class' => 'form-input mb-4',
+    'type' => 'password',
+    'required' => 'required',
+    'autocomplete' => 'new-password',
+]) ?>
+
+<?= button(
+    icon('check', 'mr-2') . lang('Install.form.submit'),
+    '',
+    ['variant' => 'primary'],
+    ['type' => 'submit', 'class' => 'self-end'],
+) ?>
+
+<?= form_close() ?>
+
+<?= $this->endSection() ?>