Perform multiple requests to mark false positives if the false positives list exceeds the accepted limit of the SecHub server

[winzj]

Situation

Currently the SecHub server allows 500 false positives to be marked with one request as a maximum amount. For larger projects this might be not enough.

Wanted

The SecHub client could perform multiple smaller requests to never exceed this limitation. This idea came up with #3119.

Remark

If it is necessary that the SecHub server can return the configured limitation (currently 500 false positives), this needs another issue.