ITensor-based MPS local simulator

**Describe the feature you'd like**
Now that we support `LocalSimulator`s, we can hook into [ITensor](https://github.com/ITensor/ITensors.jl)'s support for DMRG-based evolution methods to implement tensor network circuit simulation.

**Is this feature already present in the Python SDK?**
No.

**How would this feature be used? Please describe.**
It would make sense to implement this as a package extension, which could be loaded on newer Julia versions once `ITensors.jl` is installed.

**Describe alternatives you've considered**
This could also be a standalone package.

**Additional context**
It would be useful to offer users some control over how the simulation is run (e.g. TDVP vs TEBD, maximum bond dimension). Offering a version that supports the GPU implementations of ITensors.jl would be a good stretch goal.