Compress rotated service log files

Due to the size the debug logfiles of Keybase can grow they should be compressed when rotated out.

Currently when the service log files reach a size of 128MiB they are just renamed. I'd prefer if they would also be compressed using Zstd or some other compression format to free up on disk space.

Start by locating the service log rotation behavior that renames files after they reach 128 MiB, then inspect how rotated logs are accessed or retained. Done means rotated service logs are compressed using an agreed format while existing rotation behavior remains usable.

Written by the indexing model from the issue text.