Support for Artifactory XRay V2

[cpuzicha]

Is your feature request related to a problem? Please describe.
It is currently impossible to query the results of the XRay scan without actively triggering one.
Our usecase is a CI pipeline that does:

• build JARs
• upload buildInfo, trigger XRay scan
• do test
• do static code analysis
• retrieve XRay scan results
• (publish to Artifactory)

Describe the solution you'd like to see
Please implement the support for the XRay V2 API, in particular the GET XRay scan result for a given build

Describe alternatives you've considered
We are currently using the JFrog CLI, but this means a change in system (gradle vs bash)

Additional context
To support asynchron operation (ie 'artifactoryPublish' as first call, then some query for the results later), add a reader for the BuildInfo that is written by artifactoryPublish (or to be precise: by ArtifactoryDeployTask).