project: set up lerna and use workspaces

[christophka]

Summary

Set up the project to use lerna and yarn workspaces

Checklist

Please ensure that you've fulfilled the following tasks:

• [x] My code follows the style guides of this project and yarn lint does not throw errors
• [x] My code is well tested and did not decrease the test coverage
• [x] All new and existing tests have passed
• [x] My submission passes the build
• [ ] I've added changes to CHANGELOG.MD
• [ ] I've updated the project documentation

[coveralls]

Pull Request Test Coverage Report for Build 128

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.837%

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Totals
Change from base Build 126:	0.0%
Covered Lines:	473
Relevant Lines:	473

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💛 - Coveralls