implemented snapshot diff; started work on admin settings

lib/Settings/SnapshotsAdmin.php

@@ -0,0 +1,33 @@
+<?php
+namespace OCA\GroupfolderFilesystemSnapshots\Settings;
+
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IConfig;
+use OCP\Settings\ISettings;
+
+class SnapshotsAdmin implements ISettings {
+    private IConfig $config;
+
+    public function __construct(IConfig $config) {
+        $this->config = $config;
+    }
+
+    /**
+     * @return TemplateResponse
+     */
+    public function getForm() {
+        $parameters = [
+            'Filesystem Snapshots Path' => $this->config->getSystemValue('snapshots_path', true),
+        ];
+
+        return new TemplateResponse('settings', 'settings/admin', $parameters, '');
+    }
+
+    public function getSection() {
+        return 'groupfolder_filesystem_snapshots';
+    }
+
+    public function getPriority() {
+        return 10;
+    }
+}