Moved meme gun upgrade to meme gun mod itself

Added new hooks to allow for the meme gun pack-a-punch upgrade to work

Added 3 new memes

Added a new meme

Resized all images to 512x512 pixels

Added a new meme

Added backup checks for the selected meme image in case of a slow internet connection

Added another new meme

Added a new meme

Added forced download for connecting players for all meme images, including your own custom ones placed in: "materials/meme_gun/[whatever name you want].png"

You should now be able to simply place images in this folder, and they will be added to the pool of images the meme gun will use!

If you are locally hosting peer-to-peer, the "materials" folder is located somewhere like: "C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\materials"
You will have to create the meme_gun folder in there, and then place your images in.

If on a server, create the meme_gun folder in your server's materials folder