Adds supply radio to SL headsets

[booile]

About the pull request

Adds supply radio to SL headsets. Fixes descriptions on headsets to fit this new change.

Explain why it's good for the game

QoL change that helps SL's be able to properly talk to Req outside of having to play literal or figuratively telephone through radio backpack / asking FTL or SO to talk to req for you.

Since SL's that know what they are doing tend to need to talk to req a decent bit, and FTL's already have this channel, I do not see the harm of giving it to SL's as well.

Yes you can buy supply radio key or ask req, but it should be default considering not having good comm channels like supply radio as a SL is like not having medkits as a corpsmen or not having your tools for free as a engineer.

Testing Photographs and Procedure

Screenshots & Videos

N/A

Changelog

:cl: Swagile add: Gives SL radio supply channel access by default. /:cl: