Algorithm bot (Insertion and merge sort)

I was a bit "dead inside" for 2 days. I am better now. I decided that I should port remaining algorithms to the algorithm bot before searching will be implemented.

The code mainly from porting JavaScript to Python. Several methods are changed. The most mysterious part is the None type out of nowhere. I don't know if some animation is missing or not. But, I think there is no missing animation as the list is sorted correctly.

Also, I think I will try the project that involves database or some kind of backend to widen my skill.