fix: skip postgresql logging sinks for dev and local servers

- Add CreateConsoleLogger() and CreateNoOpLogger() factories to Logger.cs

- Branch CreateLoggers() early-return when ServerName is "Dev" or "Local"

- Main loggers (Logon, World, etc.) use console-only sink, no PostgreSQL

- Structured log loggers (ItemLog, ChatLog, etc.) use no-op to avoid connection errors

- Share single console and no-op instances across all 15 logger properties