PGF Faxes (#3685)

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## About The Pull Request

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Adds a PGF Factional office to Centcom, PGF faxes, and puts them on the
PGF ships.


![image](https://github.com/user-attachments/assets/fa767d28-b8e7-4d00-8c9f-96add222a3ca)

Also adds nodiagonal indestructible titanium walls


## Why It's Good For The Game

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The PGF should probably be able to contact their command I think.

## Changelog

:cl:
add: PGF Factional office
add: PGF Faxes
add: No diagonal indestructible titanium walls
/:cl:

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