feat: add & symbol

[Its-Just-Nans]

Hello

What do you think about adding a & symbol to the ExtendedTimestamp

Before

0027 Extra ID #1           5455 (21589) 'Extended Timestamp [UT]'
0029   Length              0009 (9)
002B   Flags               03 (3) 'Modification Access'
002C   Modification Time   6627F45A (1713894490) 'Tue Apr 23 11:48:10 2024'
0030   Access Time         6627F45D (1713894493) 'Tue Apr 23 11:48:13 2024'

After

0027 Extra ID #1           5455 (21589) 'Extended Timestamp [UT]'
0029   Length              0009 (9)
002B   Flags               03 (3) 'Modification & Access'
002C   Modification Time   6627F45A (1713894490) 'Tue Apr 23 11:48:10 2024'
0030   Access Time         6627F45D (1713894493) 'Tue Apr 23 11:48:13 2024'

[pmqs]

Can't say I have a strong opinion either way with this, so yeah, let's make the change.