Add header file describing px4 image table-of-contents
Add header file describing px4 image table-of-contents

Signed-off-by: Jukka Laitinen <54fbbb86d054c21098e8394129eaf0c4113256f1@ssrc.tii.ae>

acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware,acfloria/Firmware