Browser: Context menu to show file content

[askoriy]

What's new

• There is an ability to view the files content directly on the Flipper. It could be useful to review BadUsb scripts before run, read README and notes for collection of downloaded artifacts, view all data from saved NFC, etc.

Verification

• Now all files in Browser have additional context menu item Show right after Info.

Limitations

• With current implementation all file content is loaded into memory. Maximum file size is limited by 20K to not crash the Flipper.

Checklist (For Reviewer)

• PR has description of feature/bug
• Description contains actions to verify feature/bugfix
• I've built this code, uploaded it to the device and verified feature/bugfix

[RogueMaster]

Do you have it limited to certain file types? (.txt, .md for example...)

Any option to add text?

Not sure what Nano thinks, but, I feel like your archive scene show should be it's own app that can view/edit text in files and you can direct the "Show" option to that FAP with the method used on this PR RogueMaster/flipperzero-firmware-wPlugins#382

[RogueMaster]

You could also check the file size and not open the file if it is too big to open...

[xMasterX]

Do you have it limited to certain file types? (.txt, .md for example...)

Any option to add text?

Not sure what Nano thinks, but, I feel like your archive scene show should be it's own app that can view/edit text in files and you can direct the "Show" option to that FAP with the method used on this PR RogueMaster#382

I modified it with added checks for file types and with some fixes
Also no need to make it external .fap since change itself is not that big

[xMasterX]

Thanks for PR, after my little changes seems pretty stable