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/instance_config.php

@@ -0,0 +1,77 @@
+<?= $this->extend('Modules\Install\Views\_layout') ?>
+
+<?= $this->section('content') ?>
+
+<form action="<?= '/' .
+    config('Install')->gateway .
+    '/instance-config' ?>" class="flex flex-col w-full max-w-sm" method="post" accept-charset="utf-8">
+<?= 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">1/4</span><?= lang(
+    'Install.form.instance_config',
+) ?></h1>
+<?= form_label(lang('Install.form.hostname'), 'hostname') ?>
+<?= form_input([
+    'id' => 'hostname',
+    'name' => 'hostname',
+    'class' => 'form-input mb-4',
+    'value' => old(
+        'hostname',
+        host_url() === null ? config('App')->baseURL : host_url(),
+    ),
+    'required' => 'required',
+]) ?>
+
+
+<?= form_label(
+    lang('Install.form.media_base_url'),
+    'media_base_url',
+    [],
+    lang('Install.form.media_base_url_hint'),
+    true,
+) ?>
+<?= form_input([
+    'id' => 'media_base_url',
+    'name' => 'media_base_url',
+    'class' => 'form-input mb-4',
+    'value' => old('media_base_url', ''),
+]) ?>
+
+<?= form_label(
+    lang('Install.form.admin_gateway'),
+    'admin_gateway',
+    [],
+    lang('Install.form.admin_gateway_hint'),
+) ?>
+<?= form_input([
+    'id' => 'admin_gateway',
+    'name' => 'admin_gateway',
+    'class' => 'form-input mb-4',
+    'value' => old('admin_gateway', config('Admin')->gateway),
+    'required' => 'required',
+]) ?>
+
+<?= form_label(
+    lang('Install.form.auth_gateway'),
+    'auth_gateway',
+    [],
+    lang('Install.form.auth_gateway_hint'),
+) ?>
+<?= form_input([
+    'id' => 'auth_gateway',
+    'name' => 'auth_gateway',
+    'class' => 'form-input mb-6',
+    'value' => old('auth_gateway', config('Auth')->gateway),
+    'required' => 'required',
+]) ?>
+
+<?= button(
+    lang('Install.form.next') . icon('arrow-right', 'ml-2'),
+    '',
+    ['variant' => 'primary'],
+    ['type' => 'submit', 'class' => 'self-end'],
+) ?>
+
+<?= form_close() ?>
+
+<?= $this->endSection() ?>