Forget-me-not Shaders v0.3.0 pre-release 1

To be clear, v0.3.0 is a rewrite of Forget-me-not. I've been working on this for a little bit, but I wanted to put my current progress out for now, because I want to take a tiny break from Forget-me-not.

Development had always been based on motivation, and I've had plenty of it. Now, I've pretty much reached the end of the road for "no-brainer things to do". From here, there's nothing really obvious about what I should do next. For now, I've retreated back to making a simple little vanilla like shaderpack so I can take a little break while not abandoning shader development.

As for Forget-me-not, I definitely have some things in mind, but now is not the time. I will come back to doing those things in a little bit. Anyway, to the release:

• Almost the same feature set as before, but mostly physically based now, bringing a semi-realistic style.
• Config is limited for now.
• Performance should be fine, but isn't as fast as it could be. I'll focus on optimization later.
• Removed no-shadow pipeline for the foreseeable future.
• Should look as advanced as optifine shaderpack for now. I can guarantee that bigger and better things will come later.
• Works on Nvidia, I'm not sure about AMD.

I'll drop in to fix any minor issues there still are.

Will probably be updated soon for when Canvas gets mutable pipeline config (this will allow shadow resolution to be configurable in the options).