added stylized liquid demo

[QbieShay]

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  • [X] You tested the changes.
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What kind of change does this PR introduce? This PR adds a demo for stylized liquid

Does this PR introduce a breaking change? The dark environment has been changed. The light is no longer yellow tinted and the floor is darker, and slightly purple.

New feature or change

The stylized liquid is based on minionsart's work. There are 3 liquid bottles in the demo that showcase the behaviour of the new shader https://gfycat.com/vibrantidolizedchanticleer

[NathanLovato]

Great work!

[QbieShay]

Thanks!