Feature/delimiter tag

[trinhdaiphuc]

Pull Request Description

Changes Made:

• Implemented feature: Added support for delimiter tag in env_config.
• Created new functionality to parse and utilize delimiter tags within configuration files.
• Updated relevant documentation to include usage of delimiter tags and their impact on configurations.

Purpose:
This pull request addresses the need to enhance env_config by allowing users to specify delimiter tags in their configuration files. This feature facilitates more flexible and dynamic handling of environment variables, improving overall configurability and usability.

Related Issues:

Testing Done:

• Tested the feature extensively with various scenarios to ensure robustness and compatibility.
• Added unit tests to cover new functionality and integration tests to validate end-to-end behavior.

Additional Notes:

• Any additional context or information about the implementation that may be relevant.