Add release drafter action about iop4

[juanep97]

So it seems a matter of permissions. I will change it and try to run it again.

[morcuended]

after #50 and #51 release drafter finally worked

[juanep97]

After merging #49, there is some error in the workflow although it does not appear as failed

{ name: 'event', id: '7045723618' }
Error: Resource not accessible by integration
{
  name: 'HttpError',

also, I don't see the draft when I click in 'draft a new release'.

[morcuended]

Yes... (release-drafter/release-drafter#820)