Update configuration files for BBRS strategy and add new default strategies

- Removed JSON files from .gitignore to allow tracking of configuration files.
- Added multiple new configuration files for the BBRS strategy, including multi-timeframe and default settings.
- Introduced a combined configuration file to support weighted strategy execution.
- Established a default configuration for 5-minute and 15-minute timeframes, enhancing flexibility for strategy testing.

.gitignore

@@ -1,5 +1,4 @@
 # ---> Python
-*.json
 *.csv
 *.png
 # Byte-compiled / optimized / DLL files