New Strategy API to manage strategies including rebalance

[yuvaltaylor]

Add an API endpoint for Portfolio Simulations

Project Add ability to run a portfolio simulation using the API. Time to complete is approximately 2 weeks. Your Pledge (goal $7,500) poll Special Terms Pledges of $500 also receive 50,000 API credits. Pledges of $2,000 receive 500,000 API credits. General Terms By voting you agree to be billed the amount pledged if we decide to do this project. You can retract your pledge anytime before the project kicks off. Specs Enable modifications of: Name, benchmark, slippage, and price for transac…