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_talks/tests/src/Kernel/CountPreviousTalksTest.php

@@ -1,66 +0,0 @@
-<?php
-
-declare(strict_types = 1);
-
-namespace Drupal\Tests\opdavies_talks\Kernel;
-
-use Carbon\Carbon;
-use Drupal\node\NodeInterface;
-use Drupal\opdavies_talks\Service\TalkCounter;
-use PHPUnit\Framework\Assert;
-
-class CountPreviousTalksTest extends TalksTestBase {
-
-  private TalkCounter $talkCounter;
-
-  /** @test */
-  public function previous_talks_are_counted(): void {
-    $this->createTalk([
-      'field_events' => [
-        $this->createEvent(),
-        $this->createEvent(),
-      ],
-    ]);
-
-    $this->createTalk([
-      'field_events' => [
-        $this->createEvent(),
-      ],
-    ]);
-
-    Assert::assertSame(3, $this->talkCounter->getCount());
-  }
-
-  /** @test */
-  public function future_talks_are_not_counted(): void {
-    $this->createTalk([
-      'field_events' => [
-        $this->createEvent([
-          'field_date' => Carbon::now()->subDay(),
-        ]),
-        $this->createEvent([
-          'field_date' => Carbon::now()->addDay(),
-        ]),
-      ],
-    ]);
-
-    Assert::assertSame(1, $this->talkCounter->getCount());
-  }
-
-  /** @test */
-  public function unpublished_talks_are_not_counted(): void {
-    $this->createTalk([
-      'field_events' => [$this->createEvent()],
-      'status' => NodeInterface::NOT_PUBLISHED,
-    ]);
-
-    Assert::assertSame(0, $this->talkCounter->getCount());
-  }
-
-  protected function setUp() {
-    parent::setUp();
-
-    $this->talkCounter = $this->container->get(TalkCounter::class);
-  }
-
-}