Add few more tests and interfaces

[dkhalife]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces additional tests and expands interfaces to enhance functionality and type safety across the project.

• Adds new tests for server creation in Debug and Release modes, logger behavior, and configuration loading.
• Introduces a new IEmailSender interface and expands the IUserRepo interface with additional methods.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
main_test.go	Added tests for verifying server initialization in different modes.
internal/utils/email/email.go	Introduces the IEmailSender interface for email functionality.
internal/services/logging/logging_test.go	Adds tests for logger configuration and context-based logger retrieval.
internal/repos/user/user.go	Introduces the IUserRepo interface with extended user-related methods.
config/config_test.go	Adds tests for configuration loading and panic handling when missing files.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
internal/services/housekeeper/app_tokens.go	0.00%	1 Missing ⚠️

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