Add the default 'Implementation-*' headers to the manifest

Added headers are:
Implementation-Title:     ${project.name}
Implementation-Version:   ${project.version}
Implementation-Vendor-Id: ${project.groupId}
Implementation-Vendor:    ${project.organization.name}

Related to #878

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
Merge pull request #879 from fhuberts/implementationheaders

Add the default 'Implementation-*' headers to the manifest