added setting to hide menu items, moved file manager to top-level

[eadmaster]

Added:

• setting to disable menu items, moved file manager to top-level Main menu customization settings (hide/show items) #326

Currently this setting is unexposed in the "Config" menu, it can be used by editing bruce.conf manually or via serial cmds:

set disabledMenus Connect
set disabledMenus FM
set disabledMenus NRF24

Will add this setting array:

{
....
  "disabledMenus": [
    "Connect",
    "FM",
    "NRF24"
  ]
}

Fixes:

• prioritize SD over LittleFS in some serialcmds
• disabled GIF support on non-Cardputer devices (not working/freezing)

[eadmaster]

Restored the file manager entries in the "Others" menu, so if you don't like the new "Files" top-level menu , you can simply disable it and use the old entries.

[Teapot321]

Add this!!! It should be in Bruce!!!