Added a powerplant Function UI

- Powerplant now loses electricity and can be reset at the end of sim room building. 
- Powerplant doesn't stop E production upon electicity loss, it's just a mockup to give it a function.
- It generates E and generates E batch that can be collected on the main screen.

Added VFX to the scene buttons and sprites
Fixed minor functionality errors in the other features

More information
StatusPrototype
PlatformsHTML5
AuthorTinyCup
Made withUnity