create CLI flags for package log levels

[noot]

Task summary

• currently the package log levels can only be set via the config file
• there should also be CLI flags for each package's log level
• --log-<package-name>=level look at substrate and match

[timwu20]

Hey team! Please add your planning poker estimate with ZenHub @noot @edwardmack @jimjbrettj @kishansagathiya @omar391 @EclesioMeloJunior @arijitAD

[qdm12]

Waiting on paritytech/substrate#8025 (comment) to know what the possible target names are. For now I set them to:

log-core
log-sync
log-network
log-rpc
log-state
log-runtime
log-blockproducer
log-finalitygadget