Tradeo

- feat:
- strategy abstract class
- common useful methods in trading
- new methods in forex_client: get_bid_ask, place_break_even and get_pip
- test:
- strategy abstract class
- common useful methods in trading

- feat:
- forex main to handle incoming historical data
- support methods
- test
- forex main

- feat:
- agent in MQL5
- files utils
- new util method
- new config parameters
- test
- files utils
- agent in MQL
- utils
- forex client

- feat:
- forex handle
- paths utils
- test
- forex handle
- paths
- ci
- Makefile construction