integrate Zeek IEC104 parser

[mmguero]

@mmguero cloned issue idaholab/Malcolm#557 on 2024-09-04:

cert-lv/zeek-iec104 takes the initial work done by @georgemakrakis and expands on it. I think this would be a great protocol parser to integrate into Malcolm.

see:

• adding a new zeek package

• parsing new zeek logs

[mmguero]

@mmguero commented on 2024-09-11:

There are a few issues I'd like to resolve in the plugin before getting this in:

• can we make it signature based rather than port based?
• I don't like the way it overrides JSON vs. TSV, is there a reason we can't just let Zeek handle it globally like all the other plugins?
• this isn't as huge a deal, but the tests directory is kind of weird