Support runtime config file selection

[Charixfox]

Please implement support to direct the worker to a file other than bridgeData.yaml as the configuration file. This allows multiple worker instances to be run from the same directory with different configurations. This is useful for multi-GPU cases to avoid needing to duplicate the directory (and models) or work around a different way.

[tazlin]

I just wanted to point out that your current working directory determines the location of:

• The config file
• A .env file if it exists
• The logs

Basically, you can invoke python to run the worker from another directory containing these files to get the same net effect.