* Mark Zebra coinbase transactions with extra coinbase data
* Log when we commit a block mined by Zebra to our state
* Reduce logging instrumentation during block writes
* Remove debug types in Zebra block log
* Add network and commit to write task logs
* Apply an allow-list before we log arbitrary user messages from blocks
* Rate-limit Zebra mined block logging to once every 1000 blocks
* Add mining configs for extra coinbase data and imitating zcashd, but don't use them yet
* Check CoinbaseData size limit when building transparent transactions
* Replace LIKE_ZCASHD constants with a config
* Take extra coinbase data from the configured string
* Update the zebrad configs in the tests with new config fields