Misc improvements and fixes

[fcecin]

This PR in a nutshell:

• Logging made more useful with log levels and rotating logs
• New main() for bdkd, bdkd-tests and bdkd-discovery
• Fixed signal handling / ^C in main threads, and associated shutdown routines
• Control behavior of the log file ("bdk.log") via command-line
• Bug fixes & misc improvements

Details:

• Re-enabled logging with Logger::logToDebug()
• Logger now logs to bdk.log with support to rotating log files via a size limit (backs up to bdk.log.0, bdk.log.1, etc.) and a log file count limit
• Added command-line argument support to bdkd, bdkd-discovery and bdkd-tests, with support for custom arguments and custom defaults for each
  • --help / -h
  • --loglevel / -l: set the verbosity level of bdk.log to one of TRACE, DEBUG, INFO, WARNING, ERROR, NONE
  • --loglinelimit: set the maximum number of lines to be logged before the log file is rotated/archived
  • --logfilelimit: set the maximum number of log files (active + archived) that is kept
• Added custom main() to bdkd-tests, allowing us to e.g. configure the logging for the tests with command-line args (still able to pass arguments to Catch2 as well)
• Fixed signal handling (^C) & proper shutdown in bdkd & bdkd-discovery main thread
• Downgraded multiple logging messages to lower log types
• Fixed several redundant State::validateNextBlock() followed by State::processNextBlock() (using State::tryProcessNextBlock() instead, which runs block validation only once; also reduces logging)
• Fixed missing stopWorker() in DumpWorker::~DumpWorker
• Removed a handful of logging to "log.txt" and redirected them to the new Logger::logToDebug() ("bdk.log") as TRACE messages
• Added event listeners to Catch2, which log entering and leaving each TEST_CASE and SECTION as INFO log messages
• Added TempLogLevel helper class to the unit test suite to help changing the log level temporarily for a test or test scope
• Set temp log level for the last rdPoS test (failing) to TRACE

[bdk-cpp-sonarqube-app[bot]]

Quality Gate failed

Failed conditions
81 New issues
33.2% Coverage on New Code (required ≥ 80%)
8.0% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube

Catch issues before they fail your Quality Gate with our IDE extension SonarLint

[fcecin]

0/5 (0%) crashing after the latest patch (vs 2/3 (66%) crashing before the patch), so that was probably it.

Will merge once this gets +1 approval.