Expose Core console log format

[Sushisource]

What was changed

Added LoggingOptions#log_format and ConsoleLogFormat values so applications can select compact, pretty, or newline-delimited JSON output for Core logs written to the console. The option is represented in RBS/RBI and passed through the native bridge to Core.

Why?

Applications that ingest logs as structured data need Core to emit JSON directly instead of human-oriented text with ANSI formatting.

Checklist

1. Closes [ruby] Allow configuring core tracing format #523
2. How was this tested:
   • bundle exec rake rubocop yard steep
   • bundle exec rake compile
   • bundle exec rake rust_lint
   • TEMPORAL_SORBET_RUNTIME_CHECK=1 bundle exec rake test TESTOPTS="--name=test_runtime_console_log_format"
3. Any docs updates needed? YARD documentation, RBS/RBI signatures, and the changelog are updated.