⚛️🤌⚛️ OpenQAOA

Closed bounties:

• $60 | Expose brute force solver through OpenQAOA workflows
  closed by: lumapools, GiacomoFrn
• $100 | Add result statistics on measurement outcomes in QAOAResult object
  closed by: TerraVenil
• $60 | Prevent double authentication while using openqaoa-azure
  closed by: TerraVenil
• $160 | Implement as_matrix method for the Hamiltonian class
  closed by: AlexisRalli
• $120 | Improve test_problems.py
  closed by: Newtech66

Assume tomorrow we have a 500 qubit device: what do we do with it?

The goal of OpenQAOA is to loudly answer that question by saying "We run QAOAs!".

OpenQAOA makes it easy for you to construct complex QAOA workflows on a variety of quantum computers and fast simulators. It facilitates the use of complex parameterisations and mixer choices, extends QAOA with features like the popular Recursive QAOA, supports custom routing solutions, and many different classical optimisers.