Updates of long level loading

With permission of Jam host I updated the build with fixes for the long level generation.

Mostly I replaced random function that was constructed every time it called to a random struct with seed that initialized at the beginning. Also I added caching of the tile with lowest count of variants in the tile updates.

But major improvement was from disabling v-sync =\

While it did not make a magic for html version, the desktop build boosted from 2min of generatio to ~15seconds.

For fairness I did not touch any other known bug :)

Hope you will enjoy my game without the unnecessary wait