Provide functionality doing a group annotation instead of annotate each issue

[florian-e-zeiss]

I like your implementation checkstyle and pmd action

For some projects to annotate each issue as one annotation overload the summary.
It will be helpful only provide annotation something like

pmd detect 138 violation(s) found

or

pmd detect 138 violation(s) 0 failures 130 warnings and 4 notice

or disable annotation generation by passing input variable

    with:
       annotation_generation: false # default true

With having all entries in the check I agree.