[Feature] Estimate total number of bursters required

[stellarhopper]

Possibly provide an option to:

1. Stand at a particular spot and fire all (user clicks on a spot)
2. Optimal spot for each attack, based on heatmap calculations (this will give the minimum number of bursters needed to take it out)

[lorenzhs]

I did something like that, see https://github.com/lorenzhs/XmpSim (I'm using the decompiled formula; the code is in the python script)
However, this approach does NOT give you the minimum number of bursters needed, it gives you a sequence of positions to fire from so that in each step, the burster deals maximum damage. This greedy approach certainly gives an approximation, but the solution is not optimal.