add some code

managed_components/lvgl__lvgl/scripts/filetohex.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+import sys
+import textwrap
+import re
+
+with open(sys.argv[1], 'r') as file:
+    s = file.read()
+
+b = bytearray()
+
+if '--filter-character' in sys.argv:
+    s = re.sub(r'[^\x00-\xff]', '', s)
+if '--null-terminate' in sys.argv:
+    s += '\x00'
+
+b.extend(map(ord, s))
+
+print(textwrap.fill(', '.join([hex(a) for a in b]), 96))