Added Screenshot and Textures

[ghost]

1.15 New Textures (3 screenshots)

[KnightMiner]

As I stated multiple times on Discord, screenshots are for the pull request description, so we can see what the textures you are adding look like. Actual textures need to be in the pull request. Put the textures where they belong in the mod, you had to have them there to make the screenshots. We don't care about 1.15 screenshots for the final product, they do not benefit the mod at all and are just so we can see what you changed.

[ghost]

[ghost]

Submited all smeltery textures.
Smeltery part is done

[ghost]

Tinkers Construct is MIT licensed and I agree to MIT licenses for those textures.

[futurenp]

I approve of my textures being licensed under the MIT license

[ronuseless]

I approve of my textures being licensed under the MIT license