Support alternate database backend drivers

[runleveldev]

This pull request introduces multi-database support and refactors migration scripts for improved safety and maintainability. The configuration now supports MySQL, PostgreSQL, and SQLite, with environment-driven selection. Several migrations have been updated to use Sequelize's safer bulk operations and proper identifier quoting, reducing the risk of SQL injection and improving compatibility across dialects. Additionally, the sequelize initialization and dependencies have been updated to align with the new database support.

Database Configuration and Initialization

• The config.js file now supports MySQL, PostgreSQL, and SQLite, selecting the dialect and relevant settings based on environment variables. Throws an error for unsupported dialects. (create-a-container/config/config.js)
• The Sequelize instance in models/index.js is now initialized directly from the config object, simplifying code and supporting the new config structure. (create-a-container/models/index.js)

Migration Safety and Compatibility

• Migration scripts now use bulkUpdate and identifier quoting instead of raw SQL queries, reducing SQL injection risk and improving compatibility. This affects node assignment logic and updates in add-node-field-to-containers.js, convert-container-node-to-node-id.js, and related migrations. [1] [2] [3]
• Node seeding in create-node.js now selects distinct node names and uses bulkInsert for safer and more portable data insertion. (create-a-container/migrations/20251104193601-create-node.js)

Dependency Updates

• Added pg and sqlite3 to dependencies in package.json to support PostgreSQL and SQLite. (create-a-container/package.json)