Model MySQL CREATE SCHEMA options

[minleejae]

Summary

• parse MySQL CREATE SCHEMA character-set, collation, and encryption options
• introduce a shared typed DatabaseOption model for both CREATE SCHEMA and CREATE DATABASE
• expose option kind, value, DEFAULT, and equals-sign usage without requiring token reparsing
• retain the existing flat CreateDatabase#getDatabaseOptions() representation for compatibility

Validation

• ./gradlew test spotlessCheck checkstyleMain checkstyleTest
• parser generation remains at the baseline 11 warnings
• combined CHARACTER SET, COLLATE, and ENCRYPTION schema options were executed successfully against MySQL 8.4

PR checklist

• One independently reviewable feature
• Shared structured AST instead of duplicated raw-token handling
• Existing CREATE DATABASE access remains compatible

[manticore-projects]

Thanks!