Rename custom module directories

- Rename `opdavies_blog` to `blog`.
- Rename `opdavies_blog_test` to `blog_test`.
- Rename `opdavies_talks` to `talks`.
- Rename `opdavies_talks_test` to `talks_test`.

The files within the directories haven't changed, so there is no
breaking change caused by renaming the directories.

 Please enter the commit message for your changes. Lines starting

web/modules/custom/opdavies_blog/src/Entity/Node/Post.php

@@ -1,83 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Drupal\opdavies_blog\Entity\Node;
-
-use Drupal\discoverable_entity_bundle_classes\ContentEntityBundleInterface;
-use Drupal\node\Entity\Node;
-use Drupal\taxonomy\Entity\Term;
-use Illuminate\Support\Collection;
-
-/**
- * Defines an blog post node class.
- *
- * @ContentEntityBundleClass(
- *   label = @Translation("Blog post"),
- *   entity_type = "node",
- *   bundle = "post"
- * );
- */
-class Post extends Node implements ContentEntityBundleInterface {
-
-  public function getExternalLink(): ?array {
-    return ($link = $this->get('field_external_link')->get(0))
-      ? $link->getValue()
-      : NULL;
-  }
-
-  /**
-   * @return Collection|Term[]
-   */
-  public function getTags(): Collection {
-    return new Collection($this->get('field_tags')->referencedEntities());
-  }
-
-  public function hasBeenSentToSocialMedia(): bool {
-    return (bool) $this->get('field_sent_to_social_media')->getString();
-  }
-
-  public function hasTweet(): bool {
-    return (bool) $this->get('field_has_tweet')->getString();
-  }
-
-  public function isExternalPost(): bool {
-    return (bool) $this->getExternalLink();
-  }
-
-  public function setTags(array $tags): void {
-    $this->set('field_tags', $tags);
-  }
-
-  public function toTweet(): string {
-    $parts = [
-      $this->label(),
-      $this->url('canonical', ['absolute' => TRUE]),
-      $this->convertTermsToHashtags(),
-    ];
-
-    return implode(PHP_EOL . PHP_EOL, $parts);
-  }
-
-  private function convertTermsToHashtags(): string {
-    return $this->getTags()
-      ->filter(fn(Term $term) => !$this->tagsToRemove()
-        ->contains($term->label()))
-      ->map(fn(Term $term) => $this->convertTermToHashtag($term))
-      ->implode(' ');
-  }
-
-  private function tagsToRemove(): Collection {
-    // TODO: Move these values into configuration/settings.php.
-    return new Collection([
-      'Drupal Planet',
-    ]);
-  }
-
-  private function convertTermToHashtag(Term $tag): string {
-    return '#' . (new Collection(explode(' ', $tag->label())))
-        ->map(fn(string $word): string => ucfirst($word))
-        ->implode('');
-  }
-
-}