docs: added Acceptance Criteria to the issue template

[OlenaReukova]

Checklist:

• [ x] My code follows the style guidelines of this project
• [ x] I have performed a self-review on my code
• [ ] I have made corresponding changes to the documentation (if any were needed)
• [ x] My changes generate no new warnings or errors
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and previously existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

Description

Closes #[370]
The documentation required updates to reflect the addition of Acceptance Criteria to the issue template, ensuring consistency and clarity in how issues are described and validated.

Files changed

This Pull Request adds Acceptance Criteria to the issue template to ensure that issues are well-defined and that their resolution can be objectively measured. By providing clear criteria, it improves clarity, sets expectations, and streamlines issue tracking and resolution.

UI changes

No

Changes to Documentation

The issue template was updated to include a section for Acceptance Criteria. This change was made to ensure issues are well-defined, measurable, and consistent, facilitating better collaboration and tracking across teams.

Tests

Include a description of any tests added - if none have been added explain why.

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