feat/drain-water (#48)
* Renamed map 'height_map' to 'mountain_map', since another resource already uses this name
* Subdividing water in 5's, which I believe might be useful to improve performance
* Mountain map now has a lake; Player camera crashes with 'World' layer
* Press button if standing above it
* Red buttons can now be of type 'FLOOR' or 'WALL'
* Drain water when red button is pressed
* Make a sound when draining water
* Made water drain quicker; Stop water sound as soon as it's completely drained
Co-authored-by: Telmo Valverde <[email protected]>
