[NFR] SloIdpResponseProfileBuilder

[alexbusu]

Hi @tmilos ,
First I had to admit - you did a fantastic job here! :)

Now, I noticed there is nowhere I could find the SLO Profile Builder on IdP side of lightsaml project. If you have and use this part on your projects, could you add it to the idp lightsaml project, please?

Thanks,
Sasha