support syslog or console logging instead of files. disable session s…

[Sniffleupagus]

…tat parsing when not using logfiles. improve date parsing

Add different modes of logging: syslog, console or files (default, current behavior). syslog logging shows up in 'journalctl -u pwnagotchi', and pwnlog can be modified to read from journalctl instead of tailing the file.

Description

added a section to handle syslog logging. put the commented console logger in a "if then".

Motivation and Context

Lets logging go through standard log mechanisms for people who want that.

• [X ] I have raised an issue to propose this change (required)

How Has This Been Tested?

Tested on no-png-file branch, and against plain noai branch on a 2.9.5 pwny.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• [ X] New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [X ] My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• [ X] I've read the CONTRIBUTION guide
• [X ] I have signed-off my commits with git commit -s