Windows support

• Initial craft blueprint: packaging/craft-blueprints-kde!38 (merged)
• Set style: c2b388d5
• Add binary factory build: sysadmin/binary-factory-tooling!147 (merged)
• Start menu entry: packaging/craft-blueprints-kde@8b49f8b1
• icons: 9603811a
• Only include required files in the installer
• Make sure it works properly
• Add stable blueprint/build
• Publish on Windows Store