Replace all restricted gun crates for rifleman by making all the items they contain available for sell

[Huffie56]

About the pull request

Replace all restricted gun crates for rifleman by making all the items they contain available for sell

Explain why it's good for the game

allow player to make their own load out mix

Testing Photographs and Procedure

Screenshots & Videos

Put screenshots and videos here with an empty line between the screenshots and the <details> tags.

Changelog

🆑
balance: replace the ability to buy an VP78 crate by the possibility to buy the VP78 pistol and magazine.
balance: replace the ability to buy an SU-6 crate by the possibility to buy the SU-6 pistol, magazine and belt.
balance: replace the ability to buy an M79 Grenade Launcher crate by the possibility to buy the M79 Grenade Launcher and packets of star shell, baton slug, hornet shell packets.
/:cl:

[github-actions]

This PR has been inactive for long enough to be automatically marked as stale. This means it is at risk of being auto closed in ~ 7 days, please address any outstanding review items and ensure your PR is finished, if these are all true and you are auto-staled anyway, you need to actively ask maintainers if your PR will be merged. Once you have done any of the previous actions then you should request a maintainer remove the stale label on your PR, to reset the stale timer. If you feel no maintainer will respond in that time, you may wish to close this PR youself, while you seek maintainer comment, as you will then be able to reopen the PR yourself

[Zonespace27]

Thank you for the PR, but I'm not interested in changing how restricted guns work at the moment.