Refactored TDF processing PHP code to confirm to new TDF format

build/scripts/Targets/TargetDescriptionFiles/AVR8/BootSection.php

@@ -0,0 +1,19 @@
+<?php
+namespace Targets\TargetDescriptionFiles\Avr8;
+
+class BootSection
+{
+    public ?int $startAddress = null;
+    public ?int $size = null;
+    public ?int $pageSize = null;
+
+    public function __construct(
+        ?int $startAddress,
+        ?int $size,
+        ?int $pageSize
+    ) {
+        $this->startAddress = $startAddress;
+        $this->size = $size;
+        $this->pageSize = $pageSize;
+    }
+}