use common object store directory for research and algorithms

[rjra2611]

• The aim of the PR is to allow users to access the same object-store keys for both research and algorithms
• This PR assumes that the user will have only one algorithm per project and therefore uses the algorithm's object-store-location for research as well.
• The directory name is derived the same way lean create-project derives algorithm class name
• Closes Inconsistent ObjectStore between backtest and research #85