Fixed jump interp and patched a exploit when client and server's gun motion aren't sync'd

Changed recipes, added a lot of parts, bugfixes, QOL tweaks, added jump delay for heavy guns as well as a lot of other new features. See github commits for more info!

Same assets as before, fixed server/client desync with heavy firearms limiting jumping.

As always put the vecmath jar in the server mods if you wish to use the mod on a server.

• Added custom crafting table for guns
• Added templates for recipes
• Added lots of new firearms to main 'content pack'
• Rebalanced some firearms
• Fixed a few GL state/rendering bugs
• Added FOV dynamic behavior for gun display (*restart your game after a FOV change)
• Added 3D item icons
• Rebalanced Anti air weaponry
• Fixed Attachment GUI gun display being rendered improperly
• Added Copper
• Hopefully fixed guns not properly rendering on first boot sometimes
• Added WW2 ammo item textures
• Fixed some firearm's RPMs
• Added more display information under firearm description
• Rebalanced all anti-tank weaponry
• More changes I probably forgot on github, see commit history: https://github.com/RagexPrince683/GvCEXOverdrive

Overhauled literally everything.