add formatKVA filter

src/Twig/AppExtension.php

@@ -45,6 +45,13 @@ class AppExtension extends AbstractExtension
                     'formatBytes'
                 ]
             ),
+            new TwigFilter(
+                'format_kva',
+                [
+                    $this,
+                    'formatKVA'
+                ]
+            ),
             new TwigFilter(
                 'message_to_markdown',
                 [
@@ -247,6 +254,22 @@ class AppExtension extends AbstractExtension
         return sprintf("%.{$precision}f", $bytes / pow(1024, $factor)) . ' ' . @$size[$factor];
     }
 
+    public function formatKVA(
+        float $amount,
+        ?int $precision = 8,
+        ?string $postfix = 'KVA'
+    ): string
+    {
+        return sprintf(
+            '%s %s',
+            round(
+                $amount,
+                $precision
+            ),
+            $postfix
+        );
+    }
+
     public function messageToMarkdown(
         string $text
     ): string