STARTUP TUNING: Provide simplified logging option to avoid logging framework initialization overhead

## Is your feature request related to a problem?
The logging framework initialization is the largest single component of agent startup time, taking (at time of issue creation) 15%-25% of the startup time depending on how many instrumentations are applied (fewer instrumentations applied means a faster overall startup but the logging initialization is constant so takes a larger percentage, ie with all instrumentations disabled, the logging framework initialization takes 25% of startup time!)

## Describe the solution you'd like
One option (possibly the best) is to replace the logging framework completely. However this may require extensive work. A simpler option is to provide a simplified logging setup that can be selected, which avoids the logging framework initialization, eg a no-op or a simple print to a defined log file or stdout

## Describe alternatives you've considered
I've run with logging framework initialization disabled by hacking in the no-op logger as a hardcoded option (for testing), but this loses all log lines so is not ideal