Release notes contain link to new Javadoc

[mstachniuk]

When "org.shipkit.javadoc" plugin is applied, then release notes should contain a link (as a badge) to the published Javadoc.

By default, the link should point to the specified directory ("javadoc.repositoryDirectory") and branch "javadoc.repositoryBranch" (see ShipkitConfiguration.java for more configuration options).

There should be also a possibility to point to some class, e.g. for Mockito project link can point to the "org.mockito.Mockito" class. This should be configurable.

Starting point:

shipkit/subprojects/shipkit/src/main/groovy/org/shipkit/internal/gradle/notes/tasks/UpdateReleaseNotes.java

Lines 97 to 101 in 4b65fe6

	// TODO release notes contain link to new javadoc
	String notes = ReleaseNotesFormatters.detailedFormatter(headerMessage,
	"", task.getGitHubLabelMapping(), vcsCommitTemplate, task.getPublicationRepository(),
	contributorsMap, task.isEmphasizeVersion(), badgeFormatter)
	.formatReleaseNotes(data);