Fix CSS and JavaScript formatting issues

- Updated stylelint configuration to fix CSS formatting issues
- Updated ESLint configuration to fix JavaScript issues
- Added global variables to ESLint configuration

assets/css/admin.css

@@ -6,7 +6,7 @@
     padding: 20px;
     background: #fff;
     border: 1px solid #ccd0d4;
-    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.04);
+    box-shadow: 0 1px 1px rgb(0 0 0 / 4%);
     margin-top: 20px;
 }
 

assets/js/admin.js

@@ -3,10 +3,10 @@
  */
 
 (function($) {
-    'use strict';
+  'use strict';
 
-    $(document).ready(function() {
-        // Plugin admin functionality will go here
-    });
+  $(document).ready(function() {
+    // Plugin admin functionality will go here
+  });
 
 })(jQuery);