* WIP: Build queue for getnewaddress
* Implement background thread to process requests to getNewAddress so that we fix issue 1009 with it's async issues
* Run scalafmt
* Replace the mutable.ArrayBuffer in AddressHandling with ConcurrentLinkedQueue
* Put FundTransactionhandling.fundRawTransactionInternal's call to getNewChangeAddress() into the for expression so we don't generate an address when the funding of the transaction fails when selecting utxos
* Move thread initialization out of method
* Switch to using ArrayBlockingQueue, which will block thread with .take() so we don't need to loop constantly, add 'addressQueueSize' and 'addressQueueTimeout' configurations
* Update wallet-test/src/test/scala/org/bitcoins/wallet/AddressHandlingTest.scala
Co-Authored-By: rorp <rorp@users.noreply.github.com>
* Add error handling to return the failed future if the queue is full, add a unit test for when the queue is full
* Run scalafmt
* Rebase
* Add scaladoc for throwing an exception
* Run scalafmt again
Co-authored-by: rorp <rorp@users.noreply.github.com>
