Allow configuring the max log files to keep

[evenyag]

What type of enhancement is this?

User experience

What does the enhancement do?

Currently, we don't limit the total number of log files. A long-running database may generate too many log files. We need to limit the max log files to keep by default.

Implementation challenges

The tracing-appender already supports setting the max log files. We can expose this in our LoggingOptions.
https://docs.rs/tracing-appender/latest/tracing_appender/rolling/struct.Builder.html#method.max_log_files