Suggestions: add content that was added on the newer versions

[GatoLeyo]

There are some missing features like the potion of slow falling and luck. Also a lot of textures seems outdated since all the textures got an update on 1.14

I made this textures in order to have more parity with the new textures: https://drive.google.com/drive/folders/1XbcOAjVLXxt4j0HKC1rwp4bdhVbuodIw?usp=sharing

[GatoLeyo]

PD: im not an actual designer so prolly some textures are not the best so just look at them as a concept