refactor: prove new settings approach

src/includes/settings/class-general-settings-section.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * File providing the `GeneralSettingsSection` class.
+ *
+ * @package footnotes
+ * @since 2.8.0
+ */
+
+declare(strict_types=1);
+
+namespace footnotes\includes\settings;
+
+require_once plugin_dir_path( __DIR__ ) . 'settings/class-settings-section.php';
+
+use footnotes\includes\settings\general\ReferenceContainerSettingsGroup;
+
+/**
+ * Class defining general plugin settings.
+ *
+ * @package footnotes
+ * @since 2.8.0
+ */
+class GeneralSettingsSection extends SettingsSection {	
+	/**
+	 * The groups of settings within this section.
+	 *
+	 * @var  SettingsGroup[]
+	 *
+	 * @since  2.8.0
+	 */
+	protected array $settings_groups;
+	
+	public function __construct(
+		$options_group_slug,
+		$section_slug,
+		$title
+	) {
+		$this->options_group_slug = $options_group_slug;
+		$this->section_slug = $section_slug;
+		$this->title = $title;
+				
+		$this->load_dependencies();
+		
+		$this->add_settings_groups(get_option( $this->options_group_slug ));
+	}
+	
+	protected function load_dependencies(): void {
+		require_once plugin_dir_path( __DIR__ ) . 'settings/general/class-reference-container-settings-group.php';
+	}
+	
+	protected function add_settings_groups(): void {
+		$this->settings_groups = array (
+			ReferenceContainerSettingsGroup::GROUP_ID => new ReferenceContainerSettingsGroup($this->options_group_slug, $this->section_slug),
+		);
+	}
+}