Revert "Remove unused views sort plugin"

This reverts commit c9d44621ff.

web/modules/custom/talks/src/Plugin/views/sort/Event.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opdavies_talks\Plugin\views\sort;
+
+use Carbon\Carbon;
+use Drupal\Component\Datetime\TimeInterface;
+use Drupal\views\Annotation\ViewsSort;
+use Drupal\views\Plugin\views\sort\Date;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * @ViewsSort("event_sort")
+ */
+final class Event extends Date {
+
+  private TimeInterface $time;
+
+  public function __construct(
+    array $configuration,
+    string $pluginId,
+    array $pluginDefinition,
+    TimeInterface $time
+  ) {
+    parent::__construct($configuration, $pluginId, $pluginDefinition);
+
+    $this->time = $time;
+  }
+
+  public static function create(
+    ContainerInterface $container,
+    array $configuration,
+    $pluginId,
+    $pluginDefinition
+  ) {
+    return new static(
+      $configuration,
+      $pluginId,
+      $pluginDefinition,
+      $container->get('datetime.time')
+    );
+  }
+
+  public function query(): void {
+    $this->ensureMyTable();
+
+    $currentDate = Carbon::parse('today')->getTimestamp();
+
+    $dateAlias = "$this->tableAlias.$this->realField";
+
+    // Is this event in the past?
+    $this->query->addOrderBy(
+      NULL,
+      sprintf("%d > %s", $currentDate, $dateAlias),
+      $this->options['order'],
+      "in_past"
+    );
+
+    // How far in the past/future is this event?
+    $this->query->addOrderBy(
+      NULL,
+      sprintf('ABS(%s - %d)', $dateAlias, $currentDate),
+      $this->options['order'],
+      "distance_from_now"
+    );
+  }
+
+}