Refactored Jenkins pipeline

• Added one more Jenkins node win1 (Windows)
• Windows builds are now better parallelized with ninja
• Disabled S3 binary uploads for now (will be reimplemented in a different job)
• Win builds use Conan for all required libraries except of Qt (Qt is in the works too)
• All in all speed up of build time from roughly 1 h before to 10-15 mins now