Initialise a `UnitaryTableau` from a parity matrix

[CalMacCQ]

A boolean linear transformation on $n$ qubits can be specifed by an $(n \times n)$ binary matrix and implemented with a CNOT circuit. A CNOT circuit is clearly Clifford.

Maybe it'd be nice to have a method like UnitaryTableau.from_parity_matrix or similar for this. Turns out you can construct a Tableau fairly directly by taking the transpose of the parity marix and putting it in the blocks of the Tableau.

Originally suggested by @willsimmons1465