[Request] Build info properties

[andrewazores]

See #504

The Agent build should embed some build information into the JAR, such as the pom.xml version and git commit. This data should be written into a .properties file which gets bundled into the JAR. The Agent can load this file from the class path at startup and ensure these are set as System properties. These will then be visible through the MBean Metrics interface, for example on the Cryostat Web UI's JVM Details component.

This mechanism can also be how #504 is implemented - the server version range can be set in the pom.xml, and loaded at runtime this way