Cryptobots

Fix

- **Strategy**: fixed delta calculation for negative amounts in cash and carry bot

Feat

- **Strategy**: improve cash and carry order price calculation to prevent hanging orders
- **Strategy**: added cash and carry bot

Fix

- **Strategy**: cash and carry bot will adjust deltas by min amount limit to prevent bad orders
- **Strategy**: fixed bad_start attribute error for cash and carry bot

Feat

- **cryptobots**: created cryptobots project