Add SQLite support for local development

[TaprootFreak]

Summary

This PR adds SQLite database support for local development while maintaining MSSQL for dev/prod environments.

Changes

• Database Configuration: Environment-based database selection

  • ENVIRONMENT=loc → SQLite (local development)
  • ENVIRONMENT=dev|prd → MSSQL (existing production setup)

• Dependencies: Added sqlite3 package for TypeORM SQLite support

• Entity Updates: Updated column type definitions for cross-database compatibility

  • @Column({ length: 'MAX' }) for TEXT fields
  • @Column({ type: 'datetime' }) for timestamps
  • @Column({ type: 'float' }) for decimal numbers

• Gitignore: Added testDB/ and SQLite database files to prevent committing local test data

Benefits

• ✅ No external database required for local development
• ✅ Faster onboarding for new developers
• ✅ Simplified testing and development workflow
• ✅ Zero impact on existing dev/prod environments

Testing

• Existing dev/prod environments remain unchanged (MSSQL configuration preserved)
• Local development tested with SQLite
• All TypeORM entities compatible with both database types

Breaking Changes

None. The change is backward compatible and only affects local development when ENVIRONMENT=loc.

[TaprootFreak]

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