[Feature Request] Colour coded EOL times in signature list

[dnolen]

Request:
Add a visual indicator for EOL states to the signature list. Text colour change/counter value to indicate the remaining EOL time.

[exodus4d]

I added some "color codes" to the "leads to" system name of a chosen wormhole connection in the "signature" table:

• "fresh" wh → gray border
• "reduced" wh → gray border, orange background
• "critical" wh → gray border, red background
• EOL wh → pink border
• Frigate wh → dashed border

The "exclamation mark" that indicates a conflict (e.g. a connections is mapped to more than one target system) is not affected.