Balloonify the forensic scanner and cut on `to_chat` spam (#70820)
Balloonify the forensic scanner and cut on `to_chat` spam (#70820)

## About The Pull Request
Turns all the minor `to_chat` messages that the forensic scanner made
into balloon alerts.
Makes the `visible_message` be ignored by the scanner's user, as it was
creating 2 messages on the chat box 4noresin.
Adds a 3 second `do_after` when you try to delete logs from your scanner
to help avoid accidental deletion of logs.
Kills a pair of single letter variables while I was there.
And gave better clarity on an error message for the scanner saying it
was either busy or had no logs.
## Why It's Good For The Game
Better UX for the forensic scanner.
Using it spammed your chat with too many pointless messages that work
better as short balloon alerts.


## Changelog


:cl: Guillaume Prata
qol: The forensic scanner uses balloon alerts for most of it's simple
feedback messages, enjoy having an easier time hearing the radio
chatter.
/:cl:


Co-authored-by: Mothblocks <c52edec2bd3a27a0b2b5cccb4d09c5385b416d7e@users.noreply.github.com>
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