Version 3.0.0-beta.4

Lots of changes in this one; also some breaking ones.

What's Changed

• Fix Repeat template classes by @mairas in #751
• Add an event_loop() convenience function by @mairas in #753
• Implement a task synchronization consumable by @mairas in #754
• Fix event loop calls by @mairas in #760
• Bump vite from 5.0.13 to 5.1.8 in /frontend-plugins/sample-plugin-js by @dependabot in #756
• Bump rollup from 4.5.0 to 4.24.0 in /frontend-plugins/sample-plugin-js by @dependabot in #757
• Bump micromatch from 4.0.7 to 4.0.8 in /frontend by @dependabot in #758
• Bump rollup from 4.20.0 to 4.24.0 in /frontend by @dependabot in #759
• Web UI class cleanups by @mairas in #755
• Refactor web UI config item C++ implementation by @mairas in #761
• Rename ValueProducer::output by @mairas in #763
• Refactor TaskQueueProducer by @mairas in #764
• Unit tests and memory safety by @mairas in #765
• SKMetadata fix by @mairas in #766
• Networking compile-time configuration by @mairas in #767
• More smart pointers by @mairas in #769
• Release 3.0.0 beta.4 by @mairas in #770

Full Changelog: v3.0.0-beta.3...v3.0.0-beta.4