Sector-wide alerts, Frontier-specific alert text

[whatston3]

About the PR

Communications consoles now change a sector-wide alert level, which is properly displayed on PDAs and emergency lights on any available ship. Alert levels now display Frontier-specific text, with reference to the sector, crews, etc.

This could be merged with the NFSD SOP concept of heat (particular heat levels require active station alert levels), but this is left as a TODO.

Why / Balance

Been a long time coming.

Fixes #1139.

How to test

1. Set a Red alert level on Frontier Outpost.
2. Warp to Expeditionary Lodge. Neat, the lights are on.
3. Wander outside, check your PDA. Wow, the sector's in Red alert.

Media

This photo shows a ghost in space, checking their PDA during a Violet alert. The emergency lights inside the Expeditionary Lodge are on and appropriately set to the alert level.

Requirements

• I have read and am following the Pull Request and Changelog Guidelines.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Changelog

🆑

• tweak: Alert levels are now sector-wide, with appropriate announcements.

[noldevin]

If this could be combined with or replaced by heat that would be fantastic. Right now heat is fully player based and the only way to find it is to ask. The alert system is the perfect way to actually implement heat as a game mechanic and would definitely help the NFSD stay at the right escalation level.

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[dvir001]

Cool