BinaryBH simulation comparison with GRChombo

[mirenradia]

I ran the BinaryBH example at b88e67d (note that we have worked around #40 by using the less accurate interpolation methods) and also the GRChombo BinaryBH example at 13da3c4 using the params.txt files in their respective directories.

I used ParaView to visualize a slice of chi through the equatorial plane (well just offset from it at $z = 0.1$) every 20 coarse timesteps for each simulation. Here is the output displayed side-by-side:

20240328_SliceChiGRTeclynGRChombo.mp4

There seems to be qualitative agreement between the simulations as expected.