Add error messages to the ransomware table

[VakarisZ]

Is your feature request related to a problem? Please describe.
There's no indication about why the file encryption failed in the file encryption table.

Describe the solution you'd like
We need to display the error message and make sure that "directory not found" error message is being sent to the island in case the directory for file encryption is not found on the victim's machine.

[VakarisZ]

Another note: ransomware also doesn't send any telemetries if all of the files in the folder already have the .m0nk3y extension, which is unexpected behaviour (or we need to specify somewhere that the user needs to clean up the directories before running another ransomware simulation)