Issue to track remaining work to prepare for final release of ZIO 2.0.

Performance

• Optimize performance (@jdegoes and @adamgfraser)

Ergonomics and Safety

• Make all constructors lazy (@adamgfraser - Make More Constructors Lazy #5266)
• Remove remaining usages of M suffix

Operations

• Implement direct logging support (@jdegoes - Hooks for logging #5308)
• Replace warnings with logs (@adamgfraser - Use Logger in Platform#reportFailure #5509)
• Move ZIO ZMX into ZIO Core (@adamgfraser - Metrics #5498)
• Integrate ZIO ZMX with runtime metrics (@jdegoes)
• Finalize ZIO ZMX API (@adamgfraser - Metrics #5498)
• Tracing (@adamgfraser - Execution Tracing #5744)

Streaming

• Implement remaining operators in terms of channel encoding (@iravid - Channels: follow-up work #4886)

Testing

• Implement shared layers across specs (@zagyi - Share layers across Specs #4827)

Migration

• Scalafix migration rule (@kitlangton - ZIO 2.0 upgrade scalafix rules #5739)
• Migration guide (@khajavi - ZIO 2.0 Migration Guide #5381)
• Releases of ZIO ecosystem libraries