Improve RF algorithm

[mrpalide]

Recently we change route finder algorithm, and get rid of Dijkstra (that not work as well as we need) and use a customized BFS algorithms with our minhop/maxhop logic that we need. But, this algorithm just suitable for current network size, due to these calculations:

We are in first situation right now, and if we scale up 5x, even our new algorithm Finder work good, but we should move from it to A*. See below:

I open this ticket for future and we didn't have plan for doing these changes, at least in next weeks.