SG can now put a weapon on their back, still no backpacks

[mullenpaul]

About the pull request

Smartgunners can put a primary weapon on their back. They are still not able to put backpacks on their back.

Explain why it's good for the game

Having a backup weapon on an SG gives you more options. As the SG takes time to reload it can be useful to have a weapon which allows you to gain some space. Alternatively, having a weapon which only have some utility such as a flamer could be useful.

By making heavy use of the secondary weapon, you are reducing your effectiveness as an SG, your primary benefit is to be using that SG as much as possible.

Testing Photographs and Procedure

Screenshots & Videos

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

Changelog

🆑
balance: Smartgunners can put a primary weapon in their backpack slot whilst wearing the M56d harness
/:cl:

[PurpleCIoud]

Change log should say
Smartgunners can put a primary weapon in their backpack slot whilst wearing the M56C harness.

Becides that, in the Aliens film one of the two smartgunners infact did have a flamer that he switches over when he drops his Smartgun

[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

[Drulikar]

We could explore this in the future maybe; but for now I would rather them opt to use a pistol as their back up weapon.