Strategy Backtester Template

A template for building a strategy tester:
- date range selector
- stop loss
- take profit
- long and short strategy type selector

הערות שחרור:

Added a selector for strategy type: Long and/or Short

הערות שחרור:

Added better default options for the strategy tester

הערות שחרור:

- Add a default slippage to strategy
- Set default commission to binance commission of 0,1%