Tradingstrategy

- Adding embedded chain list repository
- Adding support for Binance Smart Chain

- Adding more metadata information on `ChainId` objects

- Adding `exchange_slug` and `chain_slug` on the `Exchange` object

- Allow to customise color range for the trade success distribution diagram

- Added custom `DEXTrader` base class, as the default logic with Backtrader was a bit insufficient

- Added trade analysis support for Backtrader strategies (earlier was QSTrader only)

- Reworked trade analysis summaries and views

- Added [advanced example for Double 7 trading strategy](https://tradingstrategy.ai/docs/programming/algorithms/double-7-advanced.html)

- Polish API key welcome setup