Update sign logging rules

[Pablete1234]

Updates sign logging to achieve a couple goals:

• Symbol spam should not fill the chat too much (currently all chars are logged)
• Single symbols should be logged (currently skipped due to <4 chars)

It does so by compacting lines with no text (ie: all special characters) removing consecutive duplicate chars. Additionally it implements a full message that roughly replicates the original sign, and can be seen on hover:
The sign placed:

The simplified chat view:

The full hover view:

[applenick]

Cool! I like the new hover message. Great work 👍