Integration with LinkAce service

[MDeLuise]

Do you follow the guidelines?

• I have tested my changes
• I read this document: https://miniflux.app/faq.html#pull-request

---

Description

Since I enjoy using both the Miniflux and LinkAce services, I wanted to integrate the two.
This pull request adds the LinkAce integration (already asked in #1916).

Changes

• Added integration with LinkAce service.
• Tested the changes, and everything seems to work fine.

Details

• The LinkAce API documentation is available here.
• This integration allows Miniflux to interact with LinkAce, providing seamless connectivity between the two services.

[fguillot]

There are few issues in the unit tests and linter checks. Looks good other than that.

[MDeLuise]

Thanks for the quick feedback. I've addressed the issues raised during the review:

• Unit Tests: I have added the missing label translations that were required by the unit tests.
• Linter: The linter was indicating some formatting changes needed in the created file. I've made the necessary adjustments to ensure compliance.

The changes should now meet the requirements. Please let me know if any further modifications are necessary.