[Epic] Collect JFR data locally and push to Cryostat

[andrewazores]

The Agent should provide the capability to start Flight Recordings on the attached JVM, similar to what the flags conventionally do:

-XX:+FlightRecorder -XX:StartFlightRecording=duration=60s,filename=myrecording.jfr

ie there should be configuration properties that the Agent picks up and uses to start a recording, with a given event template (".jfc profile") name, maxAge/maxSize settings. Rather than providing a local filesystem path where the recording should be dumped, the Agent should push the recording to Cryostast over HTTP.

The Agent should have a configuration to push the latest data to Cryostat periodically, similar to what Cryostat's Automated Rules do but with an HTTP push instead of a JMX pull data flow.

The Agent should also be able to intercept SIGTERM (and other signals?) and send the latest recording data to Cryostat before propagating the signal and allowing the JVM to continue clean shutdown.

• [Task] Start JFR dynamically by configuration #22
• [Story] Upload JFR files to Cryostat on schedule and on SIGTERM #21