[WIP] Syndicate Operative additions

4/25:

- Changes the Stechkin silencer to a 'universal' syndicate silencer for all small arms. This currently only includes the Stech and C20r SMG.
- Adds the 30-round spess AK, a less clunky but lower ammo 7.62 rifle, manufacturing title "CB-47"
- Adds the mag-fed semi-automatic syndicate operative shotgun, manufacturing title "S-12p"
- Adds three 8-round shotgun magazine types: Buckshot, Stun Slug, and 'Dragon's Breath' (Incendiary)
- sAK and S-12 have identical TC prices, offering a decent variety in loadout selection and notably a replacement for the 'necessity e-guns' on the syndie shuttle.
- Semi-automatic shotgun available in the protolathe with enough syndicate reverse-engineering (level 5)
[Buckshot and stun magazines included]