Adding the Shell Gun and Mini Energy Gun to security loadouts - #6469

About the PR

I added the Shell Gun and Mini Energy Gun to security loadouts

Why / Balance

These weapons are not particularly good but I do think they are at least a bit interesting, and this could give more of a spotlight on them for theoretical future changes (especially to the mini energy gun).

Technical details

I pray this works every day

Requirements

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

Licensing

• I confirm that I am the creator of the code in this PR, and allow licensing it under the following license(s), or that the original author(s) has given me permission to do so:
  • AGPL (https://github.com/DeltaV-Station/Delta-v/blob/master/LICENSE-AGPLv3.txt)
  • MIT (https://github.com/DeltaV-Station/Delta-v/blob/master/LICENSE-MIT.txt)

Changelog

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• tweak: The Shell Gun and Mini Energy Gun can now be picked in security loadouts.