Even more packages + Mail localization

[Monotheonist]

About the PR

Adds:

• Scarves and box mail that someone made a PR for and then instantly closed, so it never got in. Scarves has a small chance for syndicate scarves and a very very low chance for a CC scarf.
• Roboticist mail for Epistemics (ships 1 robot part and a battery.)

Tweaks:

• Moved the foam sabre into the general sword mail with the same probability as every other fake weapon in there.
• Localizes the frontier mail by making paper_mail.ftl and then doing a shitload of copy-paste action (the entire thing looks like hell, christ.)
• Tweaks comments in various files because there's just random spaces n' stuff.

Why / Balance

It's just some extra stuff to add to the amazing bloat that the mail is, and also at the same time debloats it.

Technical details

Technical changes are just YAML, random removal of space, reformatting of comments, and locstrings. If you want specifics look at the files changed.

Media

Not necessary. It's pretty small.

Requirements

• I have tested all added content and changes.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Because of the way this PR is, pulling it to any other downstream may be a little fucky because it's two things (mail tweaks + new mail) and I'm going to apologize for that here, otherwise, sorry nothing.
Also the mail locale! IF IT BREAKS AND DOES NOT FORMAT IMMEDIATELY MAKE AN ISSUE AND I WILL TRY TO FIX IT. Style tags in FTL files are fucky, apparently.

Changelog

🆑

• add: Adds a few more parcels into the mail pool.

[Monotheonist]

Free from the clutches of the linter, finally, christ.