add Hamiltonian simulation notebook from iQuHACK 2025 to the docs website

[CalMacCQ]

In particular it'd be nice to have something on Trotterisation with the transverse field ising model. Can adapt a nice demo example from the hackathon challenge.

See -> https://github.com/iQuHACK/2025-Quantinuum/blob/main/notebooks/hamiltonian_simulation.ipynb with some helper code here.

Also could optionally another notebook on Lindbladian dynamics (see hackathon repo) if there's time to do so.