Add loader for PostgresSQL

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[Copilot]

Pull request overview

This PR adds PostgreSQL database support as a new loader implementation for the Advanced Slime Paper plugin, following the same pattern as the existing MySQL loader. The implementation includes configuration setup, loader registration, and full CRUD operations for world data storage.

Key changes:

• Added new PostgresqlLoader class with database operations for world management
• Integrated PostgreSQL configuration into the plugin's datasources configuration system
• Registered the new loader module in the Gradle build system with proper dependency relocation

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
settings.gradle.kts	Added postgresql-loader module to the Gradle project structure
plugin/src/main/resources/sources.yml	Added PostgreSQL configuration section with default connection settings
plugin/src/main/java/com/infernalsuite/asp/plugin/loader/LoaderManager.java	Registered PostgreSQL loader with configuration and error handling
plugin/src/main/java/com/infernalsuite/asp/plugin/config/DatasourcesConfig.java	Added PostgresqlConfig class with getters/setters for database connection parameters
plugin/build.gradle.kts	Added relocation rule for PostgreSQL driver packages
loaders/postgresql-loader/src/main/java/com/infernalsuite/asp/loaders/postgresql/PostgresqlLoader.java	Implemented PostgreSQL loader with world CRUD operations and database versioning
loaders/postgresql-loader/build.gradle	Created build configuration for PostgreSQL loader module
loaders/build.gradle.kts	Added postgresql-loader as a dependency to the loaders module

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