Refactor database dialector initialization to use postgresx

[molon]

…nd update related tests

[Copilot]

Pull Request Overview

This PR refactors database dialector initialization to use an enhanced PostgreSQL dialector (postgresx) that preserves original error details alongside GORM error translations, and updates related tests to support this change.

• Introduces a new postgresx package with enhanced error handling that wraps GORM's PostgreSQL dialector
• Updates database initialization to use the new postgresx.Dialector instead of the standard postgres.Dialector
• Refactors test setup by consolidating shared database configuration into a common test file

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
gormx/postgresx/postgres.go	New enhanced PostgreSQL dialector with improved error handling that preserves original error details
gormx/postgresx/postgres_test.go	Comprehensive tests for the new dialector's error handling capabilities
gormx/database.go	Updated to use postgresx dialector and improved database setup with better error handling
gormx/database_test.go	Updated test expectations to use the new postgresx.Dialector type
gormx/gorm_test.go	New shared test setup file with common database configuration
gormx/omit_associations_test.go	Removed duplicate test setup code, now relies on shared configuration
gormx/example/config.yaml	Added example database configuration file
httpx/example/config.yaml	Added missing http configuration section

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