Grips & Grades hangboard app

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- Added options menu with Settings and Benchmarks activity. Logbook resides there now too.
- Created Becnhmarks (beta test) with bunch of pre made workouts. Some are just for fun and some are meant to test "grips & grades" progression by increasing difficulty and decreasing rest time progressively.
- Four new hangboards: Core, Tension Pro, Metolius Wood Deluxe II and Crusher Matrix.