Change s2_cell_id to uint64 in ClientWeather.proto

[codename-art]

s2_cell_id should be uint64 to avoid overflowing like in POGOProtos/Map/MapCell.proto

[niicojs]

In the app, it seems to be a "long" (as in 'signed').
It's indeed a "ulong" in MapCell.

I see your point, but I guess we should stick to what the app is doing.

[codename-art]

There is no errors while scanning in Russia, for example correct values,

But in some regions s2_cell_id value is too high, for example in Canada:

Nevertheless s2sphere library finds cell with same center coordinates, but with level 30 instead of 10 for negative s2_cell_id. Using this cell it is possible to find correct s2cell in this way:

cell_id = s2sphere.CellId(raw_id)
return s2sphere.Cell.from_face_pos_level(cell_id.face(), cell_id.pos(), 10)

[Furtif]

I come here to see if this is good, I have in my repo, I wanted to thank for the participation Furtif/POGOProtos#4

[niicojs]

Did you test fixed64?