Gauges, and give blocks ability to have more fluid tanks

Since fluids and energy is in version 2020.4 the couple of things i see missing that would be good to be added in a future version.

1. Gauges - while we already have a text method to show the amount of energy/fluid thats stored in a block, a gauge would be more visually appealing.

2. tile entity blocks are lacking support for storing multiple type of fluids at once. An example of usage of such a feature would be like if you had water and lava fluids stored at the same time, you could use both fluids to make a cobblestone generator.