Rename and re-organise custom modules

- Rename `opd_talks` to `opdavies_talks`
- Rename `custom` to `opdavies_blog`

web/modules/custom/custom/src/Service/TalkCounter.php

@@ -1,41 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Drupal\custom\Service;
-
-use Carbon\Carbon;
-use Drupal\Core\Entity\EntityStorageInterface;
-use Drupal\Core\Entity\EntityTypeManagerInterface;
-use Drupal\custom\Entity\Node\Talk;
-use Drupal\node\NodeInterface;
-use Drupal\paragraphs\ParagraphInterface;
-use Illuminate\Support\Collection;
-
-final class TalkCounter {
-
-  private EntityStorageInterface $nodeStorage;
-
-  public function __construct(EntityTypeManagerInterface $entityTypeManager) {
-    $this->nodeStorage = $entityTypeManager->getStorage('node');
-  }
-
-  public function getCount(): int {
-    $today = Carbon::today()->format('Y-m-d H:i:s');
-
-    return $this->getTalks()
-      ->flatMap->getEvents()
-      ->filter(fn(ParagraphInterface $event) => $event->get('field_date')->getString() <= $today)
-      ->count();
-  }
-
-  private function getTalks(): Collection {
-    $talks = $this->nodeStorage->loadByProperties([
-      'status' => NodeInterface::PUBLISHED,
-      'type' => 'talk',
-    ]);
-
-    return new Collection($talks);
-  }
-
-}