Improve psalm annotations in `Result` class

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues

[what-the-diff[bot]]

PR Summary

• Enhancement of 'Result' Class with Annotations This update introduces descriptive markers known as annotations to the Result class. This aims to offer clear and concise documentation within the code itself, improving its readability and maintainability.
• CHANGELOG.md Updated to Reflect Recent Changes The update documentation (CHANGELOG.md) has been modified to include the latest enhancements to the Result class. This allows the team and users to quickly grasp the improvements in the new version.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (010ac44) 12.24% compared to head (4515e2c) 94.45%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #636 +/- ## ============================================= + Coverage 12.24% 94.45% +82.21% Complexity 776 776 ============================================= Files 91 91 Lines 2361 2361 ============================================= + Hits 289 2230 +1941 + Misses 2072 131 -1941 ```

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