Create packer with recursive inclusion and deduplication

includes/includeBuilder.php

@@ -0,0 +1,18 @@
+<?php
+
+function yieldIncludes(string $file, &$includes, int $depth = 0): iterable
+{
+    if (!isset($includes[$file])) return;
+
+    foreach (getAllLines($file) as $line) {
+        $includeFile = getLineIncludeFile($line);
+        if ($includeFile) {
+            yield from yieldIncludes($includeFile, $includes, $depth + 1);
+            unset($includes[$includeFile]);
+        } else {
+            if ($depth > 0 && str_starts_with($line, '<?php')) continue;
+            if (empty(trim($line))) continue;
+            yield $line;
+        }
+    }
+}