Allow left/right for collapse, more hotkeys

* Use 'b' to toggle fold icon before/after key
* Use 'g' to toggle indentation guide lines
* Cosmetic fixes

src/Settings.php

@@ -8,12 +8,20 @@ class Settings
 
     public static bool $compactGroups = false;
 
+    public static bool $indentationGuides = true;
+
+    public static bool $collapseBefore = true;
+
+    public static bool $highlightRow = true;
+
     public static function load(string $filename): void
     {
         if (file_exists($filename) && is_readable($filename)) {
             $data = json_decode(file_get_contents($filename));
             self::$editorQuotedKeys = $data->editorQuotedKeys ?? false;
             self::$compactGroups = $data->compactGroups ?? false;
+            self::$indentationGuides = $data->indentationGuides ?? true;
+            self::$collapseBefore = $data->collapseBefore ?? true;
         }
     }
 
@@ -22,6 +30,9 @@ class Settings
         $data = json_encode([
             'editorQuotedKeys' => self::$editorQuotedKeys,
             'compactGroups' => self::$compactGroups,
+            'indentationGuides' => self::$indentationGuides,
+            'collapseBefore' => self::$collapseBefore,
+            'highlightRow' => self::$highlightRow,
         ], JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT)."\n";
         @file_put_contents($filename, $data);
     }