Add support for `yiisoft/definitions` version `^3.0`

[vjik]

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

[what-the-diff[bot]]

• Update CHANGELOG.md
• Update README.md
• Add support for yiisoft/definitions version ^3.0 (@vjik) to composer require section in composer json file

[codecov[bot]]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage :thumbsup:

Coverage data is based on head (3ff2046) compared to base (8808b4a). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #26 +/- ## =========================================== Coverage 100.00% 100.00% Complexity 26 26 =========================================== Files 3 3 Lines 66 66 =========================================== Hits 66 66 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft)

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