[ProfitTrailer] Bollinger Bands HIGHBB/LOWBB Study

Bollinger Bands study for ProfitTrailer.
Supports buy/sell parameters configuration for both LOWBB/HIGHBB strategies.
Highlights regions where trailing is most likely to be fulfilled and buy/sell order placed.

リリースノート:

Bollinger Bands LOWBB/HIGHBB study for ProfitTrailer.
Support buy/sell parameters for LOWBB/HIGHBB strategies.
The script highlights the regions where trailing is most likely to be successful.

リリースノート:

Code refactoring and clean-up