Download logback-ext-cloudwatch-appender JAR file with all dependencies

Implementation of logback log event consumer

The filter plugs into the logging pipeline and measures number of log events at each trace level. These counters can be used to monitor error levels for the entire application and for individual loggers. The filter can be also configured to send a subset of log events into a backend storage system such as Axibase Time-Series Database to facilitate root-cause analysis.